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Climate and Average Weather Year Round at Gratiot Community Airport Michigan, United States

At Gratiot Community Airport, the summers are warm; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 15°F to 82°F and is rarely below -2°F or above 90°F.

Based on the tourism score, the best time of year to visit Gratiot Community Airport for warm-weather activities is from mid June to early September.

Climate at Gratiot Community Airport

freezingcoldcoolwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow68%68%34%34%clearovercastprecipitation: 3.0 inprecipitation: 3.0 in1.1 in1.1 inmuggy: 31%muggy: 31%0%0%drydrytourism score: 6.5tourism score: 6.50.00.0
Gratiot Community Airport weather by month. Click on each chart for more information.

The warm season lasts for 3.7 months, from May 25 to September 15, with an average daily high temperature above 72°F. The hottest month of the year at Gratiot Community Airport is July, with an average high of 82°F and low of 59°F.

The cold season lasts for 3.4 months, from November 29 to March 10, with an average daily high temperature below 40°F. The coldest month of the year at Gratiot Community Airport is January, with an average low of 17°F and high of 29°F.

Average High and Low Temperature at Gratiot Community Airport

Average High and Low Temperature at Gratiot Community AirportwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2929°FJan 2929°FJul 1882°FJul 1882°F15°F15°F59°F59°FMay 2572°FMay 2572°FSep 1572°FSep 1572°FNov 2940°FNov 2940°FMar 1040°FMar 1040°F49°F49°F50°F50°F27°F27°F23°F23°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 29°F32°F43°F57°F69°F78°F82°F79°F71°F59°F46°F34°F
Temp. 23°F24°F33°F46°F57°F66°F70°F68°F60°F49°F38°F28°F
Low 17°F18°F26°F37°F46°F55°F59°F57°F50°F40°F31°F23°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature at Gratiot Community Airport

Average Hourly Temperature at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolcomfortablewarmcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Kropyvnytskyi, Ukraine (5,036 miles away); Nagutskoye, Russia (5,573 miles); and Kyzyldzhar, Uzbekistan (6,372 miles) are the far-away foreign places with temperatures most similar to Gratiot Community Airport (view comparison).

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At Gratiot Community Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Gratiot Community Airport begins around May 24 and lasts for 5.2 months, ending around October 29.

The clearest month of the year at Gratiot Community Airport is August, during which on average the sky is clear, mostly clear, or partly cloudy 67% of the time.

The cloudier part of the year begins around October 29 and lasts for 6.8 months, ending around May 24.

The cloudiest month of the year at Gratiot Community Airport is January, during which on average the sky is overcast or mostly cloudy 66% of the time.

Cloud Cover Categories at Gratiot Community Airport

Cloud Cover Categories at Gratiot Community AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 968%Aug 968%Jan 534%Jan 534%May 2451%May 2451%Oct 2951%Oct 2951%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 66%63%56%53%50%42%34%33%36%44%55%63%
Clearer 34%37%44%47%50%58%66%67%64%56%45%37%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Gratiot Community Airport varies throughout the year.

The wetter season lasts 7.0 months, from March 29 to October 29, with a greater than 24% chance of a given day being a wet day. The month with the most wet days at Gratiot Community Airport is June, with an average of 9.7 days with at least 0.04 inches of precipitation.

The drier season lasts 5.0 months, from October 29 to March 29. The month with the fewest wet days at Gratiot Community Airport is February, with an average of 5.0 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation at Gratiot Community Airport changes throughout the year.

Rain alone is the most common for 10 months, from February 22 to December 24. The month with the most days of rain alone at Gratiot Community Airport is June, with an average of 9.7 days.

Snow alone is the most common for 2.0 months, from December 24 to February 22. The month with the most days of snow alone at Gratiot Community Airport is January, with an average of 2.7 days.

Daily Chance of Precipitation at Gratiot Community Airport

Daily Chance of Precipitation at Gratiot Community AirportsnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 2734%Jul 2734%Feb 415%Feb 415%Dec 2420%Dec 2420%Mar 2924%Mar 2924%Oct 2924%Oct 2924%NowNowsnowrainmixed
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 1.8d1.7d4.1d7.7d9.6d9.7d10.0d10.0d9.3d7.9d5.4d3.0d
Mixed 1.0d1.1d1.2d0.4d0.0d0.0d0.0d0.0d0.0d0.2d0.8d1.4d
Snow 2.7d2.1d1.4d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.4d2.0d
Any 5.5d5.0d6.7d8.3d9.6d9.7d10.0d10.0d9.3d8.1d6.6d6.4d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Gratiot Community Airport experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Gratiot Community Airport. The month with the most rain at Gratiot Community Airport is September, with an average rainfall of 3.0 inches.

The month with the least rain at Gratiot Community Airport is January, with an average rainfall of 0.6 inches.

Average Monthly Rainfall at Gratiot Community Airport

Average Monthly Rainfall at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inSep 133.0 inSep 133.0 inJan 270.5 inJan 270.5 inMay 292.9 inMay 292.9 inJul 102.5 inJul 102.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.6″0.7″1.4″2.6″2.9″2.8″2.5″2.9″3.0″2.5″1.9″1.0″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Gratiot Community Airport experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 5.2 months, from November 8 to April 14, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Gratiot Community Airport is January, with an average snowfall of 5.9 inches.

The snowless period of the year lasts for 6.8 months, from April 14 to November 8. The least snow falls around July 18, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall at Gratiot Community Airport

Average Monthly Snowfall at Gratiot Community AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inJan 96.0 inJan 96.0 inJul 180.0 inJul 180.0 inNov 81.0 inNov 81.0 inApr 141.0 inApr 141.0 in
The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 5.9″5.8″3.9″0.9″0.0″0.0″0.0″0.0″0.0″0.2″1.7″5.2″

The length of the day at Gratiot Community Airport varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 58 minutes of daylight; the longest day is June 20, with 15 hours, 24 minutes of daylight.

Hours of Daylight and Twilight at Gratiot Community Airport

Hours of Daylight and Twilight at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 1912 hr, 8 minMar 1915 hr, 24 minJun 2015 hr, 24 minJun 2012 hr, 11 minSep 2212 hr, 11 minSep 228 hr, 58 minDec 218 hr, 58 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 9.4h10.5h12.0h13.5h14.7h15.3h15.0h13.9h12.5h11.0h9.7h9.0h

The earliest sunrise is at 5:57 AM on June 14, and the latest sunrise is 2 hours, 18 minutes later at 8:15 AM on November 2. The earliest sunset is at 5:02 PM on December 8, and the latest sunset is 4 hours, 20 minutes later at 9:23 PM on June 26.

Daylight saving time (DST) is observed at Gratiot Community Airport during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

Sunrise & Sunset with Twilight and Daylight Saving Time at Gratiot Community Airport

Sunrise & Sunset with Twilight and Daylight Saving Time at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:57 AMJun 145:57 AM9:23 PMJun 269:23 PMJun 26Dec 85:02 PMDec 85:02 PM8:15 AMNov 28:15 AMNov 2Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth at Gratiot Community Airport

Solar Elevation and Azimuth at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM00010101010202020303030404050606000010101020202020303040405050602370NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases at Gratiot Community Airport

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Gratiot Community Airport experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.7 months, from May 30 to September 20, during which time the comfort level is muggy, oppressive, or miserable at least 8% of the time. The month with the most muggy days at Gratiot Community Airport is July, with 9.1 days that are muggy or worse.

The least muggy day of the year is February 16, when muggy conditions are essentially unheard of.

Humidity Comfort Levels at Gratiot Community Airport

Humidity Comfort Levels at Gratiot Community AirportmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 160%Feb 160%Jul 2531%Jul 2531%May 308%May 308%Sep 208%Sep 208%NowNowmuggymuggycomfortablecomfortabledrydryhumidhumidoppressiveoppressive
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d1.1d4.6d9.1d8.0d3.2d0.3d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Gratiot Community Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.5 months, from October 3 to May 20, with average wind speeds of more than 9.9 miles per hour. The windiest month of the year at Gratiot Community Airport is January, with an average hourly wind speed of 12.1 miles per hour.

The calmer time of year lasts for 4.5 months, from May 20 to October 3. The calmest month of the year at Gratiot Community Airport is August, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed at Gratiot Community Airport

Average Wind Speed at Gratiot Community AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphJan 1212.2 mphJan 1212.2 mphAug 27.6 mphAug 27.6 mphOct 39.9 mphOct 39.9 mphMay 209.9 mphMay 209.9 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 12.112.011.911.510.18.98.17.98.910.311.211.6

The predominant average hourly wind direction at Gratiot Community Airport is from the west throughout the year.

Wind Direction at Gratiot Community Airport

Wind Direction at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Gratiot Community Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.7 months, from July 1 to September 22, with an average temperature above 64°F. The month of the year at Gratiot Community Airport with the warmest water is August, with an average temperature of 71°F.

The time of year with cooler water lasts for 4.5 months, from December 6 to April 22, with an average temperature below 41°F. The month of the year at Gratiot Community Airport with the coolest water is February, with an average temperature of 33°F.

Average Water Temperature at Gratiot Community Airport

Average Water Temperature at Gratiot Community AirportwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°FAug 971°FAug 971°F33°FFeb 2333°FFeb 23Jul 164°FJul 164°FSep 2264°FSep 2264°FDec 641°FDec 641°FApr 2241°FApr 2241°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 35°F33°F34°F39°F47°F58°F68°F71°F66°F55°F46°F39°F

To characterize how pleasant the weather is at Gratiot Community Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Gratiot Community Airport for general outdoor tourist activities is from mid June to early September, with a peak score in the first week of August.

Tourism Score at Gratiot Community Airport

Tourism Score at Gratiot Community Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.56.50.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Gratiot Community Airport for hot-weather activities is from late June to early August, with a peak score in the third week of July.

Beach/Pool Score at Gratiot Community Airport

Beach/Pool Score at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.94.90.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Gratiot Community Airport typically lasts for 5.0 months (151 days), from around May 5 to around October 4, rarely starting before April 15 or after May 28, and rarely ending before September 17 or after October 20.

Time Spent in Various Temperature Bands and the Growing Season at Gratiot Community Airport

Time Spent in Various Temperature Bands and the Growing Season at Gratiot Community Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 550%May 550%Oct 450%Oct 450%May 2890%May 2890%Sep 1790%Sep 1790%Apr 1510%Apr 1510%Oct 2010%Oct 2010%0%Dec 40%Dec 4Jul 28100%Jul 28100%NowNowfrigidfreezingvery coldcoolcomfortablewarmcoldhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms at Gratiot Community Airport should appear around April 23, only rarely appearing before April 10 or after May 6.

Growing Degree Days at Gratiot Community Airport

Growing Degree Days at Gratiot Community AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 2390°FApr 2390°FJun 30900°FJun 30900°FAug 151,800°FAug 151,800°FDec 312,560°FDec 312,560°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.4 months, from May 3 to August 17, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year at Gratiot Community Airport is June, with an average of 6.9 kWh.

The darker period of the year lasts for 3.5 months, from October 31 to February 13, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest month of the year at Gratiot Community Airport is December, with an average of 1.4 kWh.

Average Daily Incident Shortwave Solar Energy at Gratiot Community Airport

Average Daily Incident Shortwave Solar Energy at Gratiot Community AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 307.1 kWhJun 307.1 kWhDec 211.4 kWhDec 211.4 kWhMay 35.9 kWhMay 35.9 kWhAug 175.9 kWhAug 175.9 kWhOct 312.5 kWhOct 312.5 kWhFeb 132.5 kWhFeb 132.5 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 1.72.63.95.26.36.96.86.04.73.21.91.4

For the purposes of this report, the geographical coordinates of Gratiot Community Airport are 43.322 deg latitude, -84.688 deg longitude, and 748 ft elevation.

The topography within 2 miles of Gratiot Community Airport is essentially flat, with a maximum elevation change of 33 feet and an average elevation above sea level of 747 feet. Within 10 miles is essentially flat (190 feet). Within 50 miles contains only modest variations in elevation (801 feet).

The area within 2 miles of Gratiot Community Airport is covered by cropland (86%), within 10 miles by cropland (89%), and within 50 miles by cropland (64%) and trees (25%).

This report illustrates the typical weather at Gratiot Community Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Gratiot Community Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Mount Pleasant Municipal Airport; Jack Barstow Airport; Lansing, Capital City Airport; Owosso Community Airport; MBS International Airport; Fitch H Beach Airport; Mason Jewett Field; and Saginaw County H.W. Browne Airport.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.