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Climate and Average Weather Year Round in Salem Heights Ohio, United States

In Salem Heights, the summers are warm and humid, the winters are very cold and snowy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 24°F to 86°F and is rarely below 8°F or above 93°F.

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

Climate in Salem Heights

very coldcoldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow68%68%39%39%clearovercastprecipitation: 4.1 inprecipitation: 4.1 in2.3 in2.3 inmuggy: 61%muggy: 61%0%0%drydrytourism score: 6.6tourism score: 6.60.20.2
Salem Heights weather by month. Click on each chart for more information.

The hot season lasts for 3.8 months, from May 25 to September 19, with an average daily high temperature above 77°F. The hottest month of the year in Salem Heights is July, with an average high of 86°F and low of 66°F.

The cold season lasts for 3.0 months, from November 30 to February 29, with an average daily high temperature below 49°F. The coldest month of the year in Salem Heights is January, with an average low of 25°F and high of 40°F.

Average High and Low Temperature in Salem Heights

Average High and Low Temperature in Salem HeightshotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2940°FJan 2940°FJul 1986°FJul 1986°F24°F24°F67°F67°FMay 2577°FMay 2577°FSep 1977°FSep 1977°FNov 3049°FNov 3049°FFeb 2949°FFeb 2949°F56°F56°F56°F56°F33°F33°F30°F30°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 40°F44°F55°F66°F74°F82°F86°F84°F78°F66°F54°F44°F
Temp. 31°F34°F43°F54°F63°F72°F75°F74°F67°F55°F45°F35°F
Low 25°F27°F35°F44°F54°F62°F66°F64°F57°F46°F36°F29°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 Salem Heights

Average Hourly Temperature in Salem HeightsJanFebMarAprMayJunJulAugSepOctNovDec12 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 coldcoldcoldcoolcoolcomfortablewarmfreezing
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.

Chochkan, Armenia (6,044 miles away) is the far-away foreign place with temperatures most similar to Salem Heights (view comparison).

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In Salem Heights, 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 Salem Heights begins around June 12 and lasts for 4.8 months, ending around November 7.

The clearest month of the year in Salem Heights 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 November 7 and lasts for 7.2 months, ending around June 12.

The cloudiest month of the year in Salem Heights is January, during which on average the sky is overcast or mostly cloudy 60% of the time.

Cloud Cover Categories in Salem Heights

Cloud Cover Categories in Salem HeightsclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2668%Aug 2668%Jan 239%Jan 239%Jun 1253%Jun 1253%Nov 753%Nov 753%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 60%59%55%50%51%46%39%33%34%40%50%59%
Clearer 40%41%45%50%49%54%61%67%66%60%50%41%

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

The wetter season lasts 5.0 months, from March 14 to August 15, with a greater than 31% chance of a given day being a wet day. The month with the most wet days in Salem Heights is May, with an average of 12.0 days with at least 0.04 inches of precipitation.

The drier season lasts 7.0 months, from August 15 to March 14. The month with the fewest wet days in Salem Heights is January, with an average of 7.1 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. The month with the most days of rain alone in Salem Heights is May, with an average of 12.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 40% on May 19.

Daily Chance of Precipitation in Salem Heights

Daily Chance of Precipitation in Salem HeightswetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%May 1940%May 1940%Jan 2822%Jan 2822%Mar 1431%Mar 1431%Aug 1531%Aug 1531%NowNowrainsnow
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 5.1d4.9d8.7d10.5d12.0d11.3d11.2d9.2d7.4d7.2d7.2d6.5d
Mixed 1.0d1.2d0.7d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.3d0.9d
Snow 1.0d1.0d0.3d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.5d
Any 7.1d7.1d9.8d10.6d12.0d11.3d11.2d9.2d7.4d7.2d7.6d7.9d

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. Salem Heights experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Salem Heights. The month with the most rain in Salem Heights is May, with an average rainfall of 4.1 inches.

The month with the least rain in Salem Heights is January, with an average rainfall of 2.1 inches.

Average Monthly Rainfall in Salem Heights

Average Monthly Rainfall in Salem HeightsJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inMay 134.1 inMay 134.1 inJan 272.0 inJan 272.0 inNov 293.0 inNov 293.0 inSep 52.4 inSep 52.4 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 2.1″2.1″3.1″3.7″4.1″3.5″3.2″2.6″2.5″2.8″2.8″2.8″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Salem Heights experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 3.7 months, from November 29 to March 20, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Salem Heights is February, with an average snowfall of 3.3 inches.

The snowless period of the year lasts for 8.3 months, from March 20 to November 29. The least snow falls around July 22, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Salem Heights

Average Monthly Snowfall in Salem HeightssnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inFeb 53.5 inFeb 53.5 inJul 220.0 inJul 220.0 inNov 291.0 inNov 291.0 inMar 201.0 inMar 201.0 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 3.0″3.3″1.2″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.4″2.0″

The length of the day in Salem Heights varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 25 minutes of daylight; the longest day is June 20, with 14 hours, 55 minutes of daylight.

Hours of Daylight and Twilight in Salem Heights

Hours of Daylight and Twilight in Salem HeightsJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 55 minJun 2014 hr, 55 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 229 hr, 25 minDec 219 hr, 25 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 9.8h10.8h12.0h13.3h14.3h14.9h14.6h13.6h12.4h11.1h10.0h9.5h

The earliest sunrise is at 6:11 AM on June 13, and the latest sunrise is 1 hour, 56 minutes later at 8:06 AM on November 2. The earliest sunset is at 5:14 PM on December 6, and the latest sunset is 3 hours, 53 minutes later at 9:07 PM on June 27.

Daylight saving time (DST) is observed in Salem Heights 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 Salem Heights

Sunrise & Sunset with Twilight and Daylight Saving Time in Salem HeightsJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 136:11 AMJun 136:11 AM9:07 PMJun 279:07 PMJun 27Dec 65:14 PMDec 65:14 PM8:06 AMNov 28:06 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 Salem Heights

Solar Elevation and Azimuth in Salem HeightsJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0001010101020202030303040404050506060700001010102020202030304040505060702774NowNow
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 Salem Heights

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.

Salem Heights experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.0 months, from May 22 to September 23, during which time the comfort level is muggy, oppressive, or miserable at least 15% of the time. The month with the most muggy days in Salem Heights is July, with 18.3 days that are muggy or worse.

The month with the fewest muggy days in Salem Heights is January, with 0.0 days that are muggy or worse.

Humidity Comfort Levels in Salem Heights

Humidity Comfort Levels in Salem HeightsmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 290%Jan 290%Jul 1861%Jul 1861%May 2215%May 2215%Sep 2315%Sep 2315%NowNowoppressiveoppressivemuggymuggydrydryhumidhumidcomfortablecomfortable
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 0.0d0.0d0.0d0.2d3.6d12.4d18.3d15.6d7.2d0.9d0.0d0.0d

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 Salem Heights experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.5 months, from October 25 to May 9, with average wind speeds of more than 5.7 miles per hour. The windiest month of the year in Salem Heights is February, with an average hourly wind speed of 7.2 miles per hour.

The calmer time of year lasts for 5.5 months, from May 9 to October 25. The calmest month of the year in Salem Heights is July, with an average hourly wind speed of 4.1 miles per hour.

Average Wind Speed in Salem Heights

Average Wind Speed in Salem HeightswindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphFeb 257.3 mphFeb 257.3 mphJul 304.0 mphJul 304.0 mphOct 255.7 mphOct 255.7 mphMay 95.7 mphMay 95.7 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) 7.27.27.26.65.44.64.14.24.85.56.16.6

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

The wind is most often from the south for 2.7 months, from April 1 to June 22 and for 3.4 months, from August 27 to December 7, with a peak percentage of 39% on November 13. The wind is most often from the west for 1.8 months, from June 22 to August 17 and for 3.8 months, from December 7 to April 1, with a peak percentage of 36% on July 12. The wind is most often from the east for 1.4 weeks, from August 17 to August 27, with a peak percentage of 26% on August 26.

Wind Direction in Salem Heights

Wind Direction in Salem HeightsWSWESWJanFebMarAprMayJunJulAugSepOctNovDec0%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).

To characterize how pleasant the weather is in Salem Heights 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 Salem Heights for general outdoor tourist activities is from mid June to late September, with a peak score in the last week of August.

Tourism Score in Salem Heights

Tourism Score in Salem Heightsbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.66.60.20.2NowNowtemperaturetemperaturecloudscloudsprecipitationprecipitationtourism 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 Salem Heights for hot-weather activities is from late June to late August, with a peak score in the last week of July.

Beach/Pool Score in Salem Heights

Beach/Pool Score in Salem Heightsbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.75.70.00.0NowNowtemperaturetemperature 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 Salem Heights typically lasts for 6.4 months (195 days), from around April 11 to around October 23, rarely starting before March 25 or after April 28, and rarely ending before October 4 or after November 12.

Time Spent in Various Temperature Bands and the Growing Season in Salem Heights

Time Spent in Various Temperature Bands and the Growing Season in Salem Heightsgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1150%Apr 1150%Oct 2350%Oct 2390%Apr 2890%Apr 2890%Oct 490%Oct 410%Mar 2510%Mar 2510%Nov 1210%Nov 120%Dec 180%Dec 18Jul 17100%Jul 17100%frigidfreezingvery coldcoolcomfortablewarmhotcold
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 Salem Heights should appear around March 22, only rarely appearing before March 7 or after April 7.

Growing Degree Days in Salem Heights

Growing Degree Days in Salem HeightsJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FMar 2288°FMar 2288°FJun 7900°FJun 7900°FJul 161,800°FJul 161,800°FDec 313,737°FDec 313,737°FNowNow
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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 4.1 months, from April 27 to August 30, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Salem Heights is July, with an average of 6.6 kWh.

The darker period of the year lasts for 3.1 months, from November 6 to February 10, with an average daily incident shortwave energy per square meter below 2.8 kWh. The darkest month of the year in Salem Heights is December, with an average of 1.9 kWh.

Average Daily Incident Shortwave Solar Energy in Salem Heights

Average Daily Incident Shortwave Solar Energy in Salem HeightsbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 16.7 kWhJul 16.7 kWhDec 201.8 kWhDec 201.8 kWhApr 275.7 kWhApr 275.7 kWhAug 305.7 kWhAug 305.7 kWhNov 62.8 kWhNov 62.8 kWhFeb 102.8 kWhFeb 102.8 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) 2.13.04.25.46.16.66.66.25.13.82.51.9

For the purposes of this report, the geographical coordinates of Salem Heights are 39.072 deg latitude, -84.378 deg longitude, and 745 ft elevation.

The topography within 2 miles of Salem Heights contains only modest variations in elevation, with a maximum elevation change of 400 feet and an average elevation above sea level of 710 feet. Within 10 miles contains only modest variations in elevation (509 feet). Within 50 miles also contains significant variations in elevation (801 feet).

The area within 2 miles of Salem Heights is covered by artificial surfaces (63%) and trees (37%), within 10 miles by artificial surfaces (48%) and trees (42%), and within 50 miles by cropland (50%) and trees (37%).

This report illustrates the typical weather in Salem Heights, 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 Salem Heights.

For each station, the records are corrected for the elevation difference between that station and Salem Heights 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 Salem Heights is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Salem Heights and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Salem Heights 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.