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Climate and Average Weather Year Round in Butler Pennsylvania, United States

In Butler, the summers are warm and partly cloudy and the winters are freezing, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from 20°F to 81°F and is rarely below 4°F or above 89°F.

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

Climate in Butler

very coldcoldcoolwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow66%66%29%29%clearovercastprecipitation: 3.4 inprecipitation: 3.4 in1.7 in1.7 inmuggy: 34%muggy: 34%0%0%drydrytourism score: 6.6tourism score: 6.60.10.1
Butler weather by month. Click on each chart for more information.

The warm season lasts for 3.8 months, from May 24 to September 17, with an average daily high temperature above 72°F. The hottest month of the year in Butler is July, with an average high of 81°F and low of 62°F.

The cold season lasts for 3.1 months, from December 1 to March 4, with an average daily high temperature below 43°F. The coldest month of the year in Butler is January, with an average low of 21°F and high of 35°F.

Average High and Low Temperature in Butler

Average High and Low Temperature in ButlerwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2934°FJan 2934°FJul 1981°FJul 1981°F20°F20°F62°F62°FMay 2472°FMay 2472°FSep 1772°FSep 1772°FDec 143°FDec 143°FMar 443°FMar 443°F52°F52°F53°F53°F31°F31°F27°F27°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 35°F38°F48°F60°F70°F77°F81°F79°F72°F61°F49°F39°F
Temp. 27°F29°F38°F49°F59°F67°F71°F69°F62°F51°F42°F32°F
Low 21°F23°F30°F40°F49°F58°F62°F60°F53°F43°F35°F26°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 Butler

Average Hourly Temperature in ButlerJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingvery coldvery coldcoldcoldcoolcomfortablewarmcomfortablefreezingfreezing
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.

Topolog, Romania (5,044 miles away) and Cherkessk, Russia (5,550 miles) are the far-away foreign places with temperatures most similar to Butler (view comparison).

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In Butler, 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 Butler begins around May 6 and lasts for 6.1 months, ending around November 9.

The clearest month of the year in Butler is August, during which on average the sky is clear, mostly clear, or partly cloudy 65% of the time.

The cloudier part of the year begins around November 9 and lasts for 5.9 months, ending around May 6.

The cloudiest month of the year in Butler is January, during which on average the sky is overcast or mostly cloudy 70% of the time.

Cloud Cover Categories in Butler

Cloud Cover Categories in ButlerclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2666%Aug 2666%Jan 1229%Jan 1229%May 647%May 647%Nov 948%Nov 948%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 70%67%59%54%52%46%39%35%36%44%56%67%
Clearer 30%33%41%46%48%54%61%65%64%56%44%33%

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

The wetter season lasts 5.8 months, from March 28 to September 22, with a greater than 30% chance of a given day being a wet day. The month with the most wet days in Butler is June, with an average of 11.8 days with at least 0.04 inches of precipitation.

The drier season lasts 6.2 months, from September 22 to March 28. The month with the fewest wet days in Butler is January, with an average of 6.7 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 Butler is June, with an average of 11.8 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 41% on June 15.

Daily Chance of Precipitation in Butler

Daily Chance of Precipitation in ButlerwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 1541%Jun 1541%Jan 3020%Jan 3020%Mar 2830%Mar 2830%Sep 2230%Sep 2230%NowNowrainsnowmixed
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 3.9d4.0d7.0d9.4d11.4d11.8d11.5d10.3d9.0d8.2d6.9d5.4d
Mixed 1.1d1.4d1.1d0.2d0.0d0.0d0.0d0.0d0.0d0.1d0.7d1.3d
Snow 1.7d1.3d0.7d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d1.0d
Any 6.7d6.7d8.9d9.7d11.4d11.8d11.5d10.3d9.0d8.3d7.9d7.7d

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. Butler experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Butler. The month with the most rain in Butler is June, with an average rainfall of 3.4 inches.

The month with the least rain in Butler is February, with an average rainfall of 1.4 inches.

Average Monthly Rainfall in Butler

Average Monthly Rainfall in ButlerJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inJun 123.4 inJun 123.4 inFeb 61.3 inFeb 61.3 inSep 82.9 inSep 82.9 inNov 82.5 inNov 82.5 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 1.4″1.4″2.1″2.7″3.1″3.4″3.2″2.9″2.8″2.4″2.4″2.0″

Snowfall

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

The snowy period of the year lasts for 4.6 months, from November 17 to April 4, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Butler is February, with an average snowfall of 4.4 inches.

The snowless period of the year lasts for 7.4 months, from April 4 to November 17. The least snow falls around July 23, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Butler

Average Monthly Snowfall in ButlersnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inFeb 144.4 inFeb 144.4 inJul 230.0 inJul 230.0 inNov 171.0 inNov 171.0 inApr 41.0 inApr 41.0 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 4.0″4.4″2.8″0.4″0.0″0.0″0.0″0.0″0.0″0.0″0.9″3.1″

The length of the day in Butler varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 14 minutes of daylight; the longest day is June 20, with 15 hours, 7 minutes of daylight.

Hours of Daylight and Twilight in Butler

Hours of Daylight and Twilight in ButlerJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 1912 hr, 8 minMar 1915 hr, 7 minJun 2015 hr, 7 minJun 2012 hr, 11 minSep 2212 hr, 11 minSep 229 hr, 14 minDec 219 hr, 14 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 9.6h10.7h12.0h13.3h14.5h15.1h14.8h13.7h12.4h11.1h9.9h9.3h

The earliest sunrise is at 5:47 AM on June 14, and the latest sunrise is 2 hours, 5 minutes later at 7:52 AM on November 2. The earliest sunset is at 4:51 PM on December 8, and the latest sunset is 4 hours, 4 minutes later at 8:55 PM on June 26.

Daylight saving time (DST) is observed in Butler 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 Butler

Sunrise & Sunset with Twilight and Daylight Saving Time in ButlerJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:47 AMJun 145:47 AM8:55 PMJun 268:55 PMJun 26Dec 84:51 PMDec 84:51 PM7:52 AMNov 27:52 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 Butler

Solar Elevation and Azimuth in ButlerJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM000101010102020203030304040505060607000010101020202020303040405050602673NowNow
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 Butler

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.

Butler experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.6 months, from May 31 to September 16, during which time the comfort level is muggy, oppressive, or miserable at least 9% of the time. The month with the most muggy days in Butler is July, with 10.0 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 Butler

Humidity Comfort Levels in ButlermuggyJanFebMarAprMayJunJulAugSepOctNovDec0%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 2034%Jul 2034%May 319%May 319%Sep 169%Sep 169%NowNowmuggymuggyhumidhumidcomfortablecomfortabledrydryoppressiveoppressive
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 0.0d0.0d0.0d0.0d1.0d5.3d10.0d7.9d2.9d0.2d0.0d0.0d

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 Butler experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.3 months, from November 14 to April 24, with average wind speeds of more than 4.9 miles per hour. The windiest month of the year in Butler is February, with an average hourly wind speed of 6.5 miles per hour.

The calmer time of year lasts for 6.7 months, from April 24 to November 14. The calmest month of the year in Butler is August, with an average hourly wind speed of 3.3 miles per hour.

Average Wind Speed in Butler

Average Wind Speed in ButlerwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mphJan 316.6 mphJan 316.6 mphJul 313.3 mphJul 313.3 mphNov 144.9 mphNov 144.9 mphApr 244.9 mphApr 244.9 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) 6.46.56.15.34.33.73.43.33.74.35.05.7

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

The wind is most often from the south for 1.0 months, from September 2 to October 3, with a peak percentage of 33% on September 23. The wind is most often from the west for 11 months, from October 3 to September 2, with a peak percentage of 49% on January 1.

Wind Direction in Butler

Wind Direction in ButlerWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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 Butler 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 Butler for general outdoor tourist activities is from mid June to mid September, with a peak score in the second week of August.

Tourism Score in Butler

Tourism Score in Butlerbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.66.60.10.1NowNow 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 Butler for hot-weather activities is from early July to mid August, with a peak score in the third week of July.

Beach/Pool Score in Butler

Beach/Pool Score in Butlerbest 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 Butler typically lasts for 5.6 months (169 days), from around April 29 to around October 15, rarely starting before April 10 or after May 20, and rarely ending before September 28 or after November 2.

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

Time Spent in Various Temperature Bands and the Growing Season in Butlergrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2950%Apr 2950%Oct 1550%Oct 1550%May 2090%May 2090%Sep 2890%Sep 2890%Apr 1010%Apr 1010%Nov 210%Nov 210%Jul 24100%Jul 24100%NowNowfrigidfreezingvery coldcoolcomfortablewarmcold
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 Butler should appear around April 7, only rarely appearing before March 22 or after April 21.

Growing Degree Days in Butler

Growing Degree Days in ButlerJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FApr 790°FApr 790°FJun 22900°FJun 22900°FAug 51,800°FAug 51,800°FDec 312,896°FDec 312,896°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 3.8 months, from May 1 to August 26, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Butler is June, with an average of 6.7 kWh.

The darker period of the year lasts for 3.4 months, from November 4 to February 14, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest month of the year in Butler is December, with an average of 1.5 kWh.

Average Daily Incident Shortwave Solar Energy in Butler

Average Daily Incident Shortwave Solar Energy in ButlerbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 296.8 kWhJun 296.8 kWhDec 221.5 kWhDec 221.5 kWhMay 15.7 kWhMay 15.7 kWhAug 265.7 kWhAug 265.7 kWhNov 42.6 kWhNov 42.6 kWhFeb 142.6 kWhFeb 142.6 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) 1.72.63.95.26.16.76.66.04.93.42.21.5

For the purposes of this report, the geographical coordinates of Butler are 40.861 deg latitude, -79.895 deg longitude, and 1,043 ft elevation.

The topography within 2 miles of Butler contains only modest variations in elevation, with a maximum elevation change of 344 feet and an average elevation above sea level of 1,142 feet. Within 10 miles contains only modest variations in elevation (594 feet). Within 50 miles contains significant variations in elevation (1,880 feet).

The area within 2 miles of Butler is covered by artificial surfaces (56%) and trees (41%), within 10 miles by trees (61%) and cropland (33%), and within 50 miles by trees (61%) and cropland (24%).

This report illustrates the typical weather in Butler, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Butler.

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