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Climate and Average Weather Year Round in Ortonville Michigan, United States

In Ortonville, 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 16°F to 81°F and is rarely below -0°F or above 89°F.

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

Climate in Ortonville

freezingvery coldcoldcoolwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow68%68%35%35%clearovercastprecipitation: 3.0 inprecipitation: 3.0 in1.2 in1.2 inmuggy: 30%muggy: 30%0%0%drydrytourism score: 6.8tourism score: 6.80.00.0
Ortonville weather by month. Click on each chart for more information.

The warm season lasts for 3.7 months, from May 25 to September 16, with an average daily high temperature above 71°F. The hottest month of the year in Ortonville is July, with an average high of 81°F and low of 61°F.

The cold season lasts for 3.4 months, from November 30 to March 9, with an average daily high temperature below 40°F. The coldest month of the year in Ortonville is January, with an average low of 18°F and high of 30°F.

Average High and Low Temperature in Ortonville

Average High and Low Temperature in OrtonvillewarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°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 1881°FJul 1881°F16°F16°F62°F62°FMay 2571°FMay 2571°FSep 1671°FSep 1671°FNov 3040°FNov 3040°FMar 940°FMar 940°F50°F50°F52°F52°F28°F28°F24°F24°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 30°F32°F43°F57°F68°F77°F81°F78°F71°F59°F46°F35°F
Temp. 23°F25°F34°F46°F58°F67°F71°F69°F61°F50°F39°F28°F
Low 18°F19°F27°F38°F48°F57°F61°F60°F52°F42°F33°F24°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 in Ortonville

Average Hourly Temperature in OrtonvilleJanFebMarAprMayJunJulAugSepOctNovDec12 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.

Donetsk, Ukraine (5,219 miles away) and Severnoye, Russia (5,541 miles) are the far-away foreign places with temperatures most similar to Ortonville (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Ortonville to another city:

Map

In Ortonville, 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 in Ortonville begins around May 28 and lasts for 5.0 months, ending around October 29.

The clearest month of the year in Ortonville 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 7.0 months, ending around May 28.

The cloudiest month of the year in Ortonville is January, during which on average the sky is overcast or mostly cloudy 65% of the time.

Cloud Cover Categories in Ortonville

Cloud Cover Categories in OrtonvilleclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%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 1035%Jan 1035%May 2851%May 2851%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 65%62%56%53%50%43%35%33%36%43%54%62%
Clearer 35%38%44%47%50%57%65%67%64%57%46%38%

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

The wetter season lasts 6.6 months, from March 30 to October 18, with a greater than 26% chance of a given day being a wet day. The month with the most wet days in Ortonville is June, with an average of 10.2 days with at least 0.04 inches of precipitation.

The drier season lasts 5.4 months, from October 18 to March 30. The month with the fewest wet days in Ortonville is February, with an average of 5.2 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 in Ortonville changes throughout the year.

Rain alone is the most common for 10 months, from February 25 to December 31. The month with the most days of rain alone in Ortonville is June, with an average of 10.2 days.

Snow alone is the most common for 1.8 months, from January 1 to February 25. The month with the most days of snow alone in Ortonville is January, with an average of 2.7 days.

Daily Chance of Precipitation in Ortonville

Daily Chance of Precipitation in OrtonvillesnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 1235%Jun 1235%Feb 416%Feb 416%Mar 3026%Mar 3026%Oct 1826%Oct 1826%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 2.1d1.8d4.3d7.9d9.7d10.2d10.4d10.1d9.4d7.9d5.7d3.4d
Mixed 0.9d1.0d1.3d0.5d0.0d0.0d0.0d0.0d0.0d0.1d0.6d1.3d
Snow 2.7d2.4d1.3d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.3d1.8d
Any 5.8d5.2d6.9d8.6d9.7d10.2d10.4d10.1d9.4d8.1d6.6d6.6d

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. Ortonville experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Ortonville. The month with the most rain in Ortonville is September, with an average rainfall of 2.9 inches.

The month with the least rain in Ortonville is January, with an average rainfall of 0.6 inches.

Average Monthly Rainfall in Ortonville

Average Monthly Rainfall in OrtonvilleJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inSep 103.0 inSep 103.0 inJan 310.6 inJan 310.6 inMay 302.8 inMay 302.8 inAug 22.8 inAug 22.8 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″1.3″2.3″2.7″2.8″2.6″2.8″2.9″2.3″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. Ortonville experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 5.0 months, from November 14 to April 15, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Ortonville is February, with an average snowfall of 6.1 inches.

The snowless period of the year lasts for 7.0 months, from April 15 to November 14. The least snow falls around July 19, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Ortonville

Average Monthly Snowfall in OrtonvillesnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inFeb 86.1 inFeb 86.1 inJul 190.0 inJul 190.0 inNov 141.0 inNov 141.0 inApr 151.0 inApr 151.0 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″6.1″3.8″1.0″0.0″0.0″0.0″0.0″0.0″0.1″1.1″5.2″

The length of the day in Ortonville varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 1 minute of daylight; the longest day is June 20, with 15 hours, 21 minutes of daylight.

Hours of Daylight and Twilight in Ortonville

Hours of Daylight and Twilight in OrtonvilleJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 1912 hr, 8 minMar 1915 hr, 21 minJun 2015 hr, 21 minJun 2012 hr, 11 minSep 2212 hr, 11 minSep 229 hr, 1 minDec 219 hr, 1 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 9.4h10.6h12.0h13.4h14.7h15.3h15.0h13.8h12.4h11.0h9.7h9.1h

The earliest sunrise is at 5:54 AM on June 14, and the latest sunrise is 2 hours, 15 minutes later at 8:10 AM on November 2. The earliest sunset is at 4:59 PM on December 8, and the latest sunset is 4 hours, 17 minutes later at 9:16 PM on June 26.

Daylight saving time (DST) is observed in Ortonville 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 in Ortonville

Sunrise & Sunset with Twilight and Daylight Saving Time in OrtonvilleJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:54 AMJun 145:54 AM9:16 PMJun 269:16 PMJun 26Dec 84:59 PMDec 84:59 PM8:10 AMNov 28:10 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 in Ortonville

Solar Elevation and Azimuth in OrtonvilleJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00010101010202020303030404050606000010101020202020303040405050602471NowNow
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 in Ortonville

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.

Ortonville experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.6 months, from June 1 to September 19, during which time the comfort level is muggy, oppressive, or miserable at least 7% of the time. The month with the most muggy days in Ortonville is July, with 8.7 days that are muggy or worse.

The least muggy day of the year is February 24, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Ortonville

Humidity Comfort Levels in OrtonvillemuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 240%Feb 240%Jul 3130%Jul 3130%Jun 17%Jun 17%Sep 197%Sep 197%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 0.0d0.0d0.0d0.0d0.9d4.4d8.7d7.6d3.0d0.2d0.0d0.0d

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 in Ortonville experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.3 months, from October 4 to May 13, with average wind speeds of more than 10.5 miles per hour. The windiest month of the year in Ortonville is January, with an average hourly wind speed of 12.9 miles per hour.

The calmer time of year lasts for 4.7 months, from May 13 to October 4. The calmest month of the year in Ortonville is August, with an average hourly wind speed of 8.1 miles per hour.

Average Wind Speed in Ortonville

Average Wind Speed in OrtonvillewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphJan 1213.0 mphJan 1213.0 mphAug 37.9 mphAug 37.9 mphOct 410.5 mphOct 410.5 mphMay 1310.5 mphMay 1310.5 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) 12.912.612.511.910.49.18.38.19.310.911.912.3

The predominant average hourly wind direction in Ortonville varies throughout the year.

The wind is most often from the south for 2.0 weeks, from August 31 to September 14, with a peak percentage of 31% on September 13. The wind is most often from the west for 12 months, from September 14 to August 31, with a peak percentage of 45% on January 1.

Wind Direction in Ortonville

Wind Direction in OrtonvilleWSWJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Ortonville 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 extreme seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.0 months, from June 22 to September 23, with an average temperature above 65°F. The month of the year in Ortonville with the warmest water is August, with an average temperature of 73°F.

The time of year with cooler water lasts for 4.2 months, from December 9 to April 16, with an average temperature below 41°F. The month of the year in Ortonville with the coolest water is February, with an average temperature of 33°F.

Average Water Temperature in Ortonville

Average Water Temperature in OrtonvillewarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°FAug 274°FAug 274°F33°FFeb 1433°FFeb 14Jun 2265°FJun 2265°FSep 2365°FSep 2365°FDec 941°FDec 941°FApr 1641°FApr 1641°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 35°F33°F35°F41°F51°F63°F72°F73°F68°F57°F48°F40°F

To characterize how pleasant the weather is in Ortonville 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 Ortonville for general outdoor tourist activities is from mid June to early September, with a peak score in the second week of August.

Tourism Score in Ortonville

Tourism Score in Ortonvillebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.86.80.00.0NowNowtemperaturetemperature 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 Ortonville for hot-weather activities is from late June to mid August, with a peak score in the third week of July.

Beach/Pool Score in Ortonville

Beach/Pool Score in Ortonvillebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.05.00.00.0NowNowtemperaturetemperature 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 in Ortonville typically lasts for 5.5 months (167 days), from around April 30 to around October 13, rarely starting before April 12 or after May 19, and rarely ending before September 25 or after October 31.

Time Spent in Various Temperature Bands and the Growing Season in Ortonville

Time Spent in Various Temperature Bands and the Growing Season in Ortonvillegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 3050%Apr 3050%Oct 1350%Oct 1350%May 1990%May 1990%Sep 2590%Sep 2590%Apr 1210%Apr 1210%Oct 3110%Oct 3110%Jul 25100%Jul 25100%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 in Ortonville should appear around April 22, only rarely appearing before April 9 or after May 6.

Growing Degree Days in Ortonville

Growing Degree Days in OrtonvilleJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FApr 2290°FApr 2290°FJun 29900°FJun 29900°FAug 121,800°FAug 121,800°FDec 312,680°FDec 312,680°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 3.5 months, from May 2 to August 20, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year in Ortonville is June, with an average of 6.8 kWh.

The darker period of the year lasts for 3.4 months, from November 1 to February 13, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest month of the year in Ortonville is December, with an average of 1.4 kWh.

Average Daily Incident Shortwave Solar Energy in Ortonville

Average Daily Incident Shortwave Solar Energy in OrtonvillebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 307.0 kWhJun 307.0 kWhDec 191.4 kWhDec 191.4 kWhMay 25.9 kWhMay 25.9 kWhAug 205.9 kWhAug 205.9 kWhNov 12.5 kWhNov 12.5 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) 1.72.63.95.26.26.86.75.94.83.22.01.4

For the purposes of this report, the geographical coordinates of Ortonville are 42.852 deg latitude, -83.443 deg longitude, and 938 ft elevation.

The topography within 2 miles of Ortonville contains only modest variations in elevation, with a maximum elevation change of 243 feet and an average elevation above sea level of 996 feet. Within 10 miles also contains only modest variations in elevation (469 feet). Within 50 miles contains only modest variations in elevation (797 feet).

The area within 2 miles of Ortonville is covered by trees (66%), artificial surfaces (21%), and cropland (10%), within 10 miles by trees (47%) and cropland (28%), and within 50 miles by cropland (53%) and artificial surfaces (23%).

This report illustrates the typical weather in Ortonville, 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

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Ortonville.

For each station, the records are corrected for the elevation difference between that station and Ortonville according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Ortonville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ortonville and a given station.

The stations contributing to this reconstruction are:

Sources mapKPTK, 44%13 mi, 36 ftKD95, 28%17 mi, -105 ftKFNT, 28%17 mi, -171 ft© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of Ortonville and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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.