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Climate and Average Weather Year Round in Monroe Wisconsin, United States

In Monroe, the summers are long, warm, and wet; 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 13°F to 83°F and is rarely below -7°F or above 90°F.

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

Climate in Monroe

freezingcoldcoolwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow69%69%41%41%clearovercastprecipitation: 4.2 inprecipitation: 4.2 in0.9 in0.9 inmuggy: 42%muggy: 42%0%0%drydrytourism score: 6.8tourism score: 6.80.00.0
Monroe weather by month. Click on each chart for more information.

The warm season lasts for 3.9 months, from May 20 to September 18, with an average daily high temperature above 72°F. The hottest month of the year in Monroe is July, with an average high of 82°F and low of 63°F.

The cold season lasts for 3.1 months, from November 30 to March 2, with an average daily high temperature below 39°F. The coldest month of the year in Monroe is January, with an average low of 14°F and high of 28°F.

Average High and Low Temperature in Monroe

Average High and Low Temperature in MonroewarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-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 2828°FJan 2828°FJul 1883°FJul 1883°F13°F13°F64°F64°FMay 2072°FMay 2072°FSep 1872°FSep 1872°FNov 3039°FNov 3039°FMar 239°FMar 239°F51°F51°F53°F53°F25°F25°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 28°F32°F45°F59°F70°F79°F82°F80°F72°F60°F46°F32°F
Temp. 20°F24°F35°F48°F59°F69°F72°F70°F62°F50°F38°F25°F
Low 14°F18°F28°F39°F50°F59°F63°F61°F53°F42°F31°F19°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 Monroe

Average Hourly Temperature in MonroeJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingfreezingcoldcoldcoolcomfortablecomfortablewarmvery coldvery cold
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.

Garrni, Armenia (6,057 miles away) and Almaty, Kazakhstan (6,453 miles) are the far-away foreign places with temperatures most similar to Monroe (view comparison).

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In Monroe, 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 Monroe begins around June 7 and lasts for 4.5 months, ending around October 23.

The clearest month of the year in Monroe is August, during which on average the sky is clear, mostly clear, or partly cloudy 68% of the time.

The cloudier part of the year begins around October 23 and lasts for 7.5 months, ending around June 7.

The cloudiest month of the year in Monroe is January, during which on average the sky is overcast or mostly cloudy 58% of the time.

Cloud Cover Categories in Monroe

Cloud Cover Categories in MonroeclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2569%Aug 2569%Dec 2841%Dec 2841%Jun 755%Jun 755%Oct 2355%Oct 2355%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 58%56%53%52%49%42%34%32%34%43%52%58%
Clearer 42%44%47%48%51%58%66%68%66%57%48%42%

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

The wetter season lasts 5.8 months, from April 4 to September 29, with a greater than 26% chance of a given day being a wet day. The month with the most wet days in Monroe is June, with an average of 11.5 days with at least 0.04 inches of precipitation.

The drier season lasts 6.2 months, from September 29 to April 4. The month with the fewest wet days in Monroe is January, with an average of 4.3 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 Monroe changes throughout the year.

Rain alone is the most common for 9.8 months, from February 19 to December 14. The month with the most days of rain alone in Monroe is June, with an average of 11.5 days.

Snow alone is the most common for 2.2 months, from December 14 to February 19. The month with the most days of snow alone in Monroe is January, with an average of 2.4 days.

Daily Chance of Precipitation in Monroe

Daily Chance of Precipitation in MonroesnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 639%Jun 639%Feb 213%Feb 213%Dec 1417%Dec 1417%Apr 426%Apr 426%Sep 2926%Sep 2926%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 1.2d1.7d4.4d8.2d10.6d11.5d10.9d10.4d8.7d7.0d4.9d2.2d
Mixed 0.7d0.7d0.8d0.3d0.0d0.0d0.0d0.0d0.0d0.1d0.7d1.1d
Snow 2.4d1.8d0.9d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.5d2.0d
Any 4.3d4.1d6.2d8.6d10.6d11.5d10.9d10.4d8.7d7.1d6.1d5.3d

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. Monroe experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Monroe. The month with the most rain in Monroe is June, with an average rainfall of 4.2 inches.

The month with the least rain in Monroe is January, with an average rainfall of 0.4 inches.

Average Monthly Rainfall in Monroe

Average Monthly Rainfall in MonroeJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inJun 144.2 inJun 144.2 inJan 210.4 inJan 210.4 inAug 63.6 inAug 63.6 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 0.4″0.7″1.5″2.9″3.3″4.2″3.5″3.6″3.1″2.4″1.8″0.9″

Snowfall

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

The snowy period of the year lasts for 5.0 months, from November 8 to April 7, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Monroe is December, with an average snowfall of 5.1 inches.

The snowless period of the year lasts for 7.0 months, from April 7 to November 8. The least snow falls around July 26, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Monroe

Average Monthly Snowfall in MonroesnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inDec 205.2 inDec 205.2 inJul 260.0 inJul 260.0 inNov 81.0 inNov 81.0 inApr 71.0 inApr 71.0 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 4.6″4.3″2.4″0.6″0.0″0.0″0.0″0.0″0.0″0.1″1.8″5.1″

The length of the day in Monroe varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 3 minutes of daylight; the longest day is June 20, with 15 hours, 19 minutes of daylight.

Hours of Daylight and Twilight in Monroe

Hours of Daylight and Twilight in MonroeJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 1912 hr, 8 minMar 1915 hr, 19 minJun 2015 hr, 19 minJun 2012 hr, 11 minSep 2212 hr, 11 minSep 229 hr, 3 minDec 219 hr, 3 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 9.5h10.6h12.0h13.4h14.7h15.3h14.9h13.8h12.4h11.0h9.8h9.1h

The earliest sunrise is at 5:20 AM on June 14, and the latest sunrise is 2 hours, 14 minutes later at 7:34 AM on November 2. The earliest sunset is at 4:25 PM on December 8, and the latest sunset is 4 hours, 15 minutes later at 8:40 PM on June 26.

Daylight saving time (DST) is observed in Monroe 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 Monroe

Sunrise & Sunset with Twilight and Daylight Saving Time in MonroeJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:20 AMJun 145:20 AM8:40 PMJun 268:40 PMJun 26Dec 84:25 PMDec 84:25 PM7:34 AMNov 27:34 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 Monroe

Solar Elevation and Azimuth in MonroeJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0001010101020202030303040405050606000010101020202020303040405050602471NowNow
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 Monroe

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.

Monroe experiences significant 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 10% of the time. The month with the most muggy days in Monroe is July, with 12.1 days that are muggy or worse.

The least muggy day of the year is February 12, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Monroe

Humidity Comfort Levels in MonroemuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 120%Feb 120%Jul 2242%Jul 2242%Jun 110%Jun 110%Sep 1910%Sep 1910%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 0.0d0.0d0.0d0.0d1.3d6.5d12.1d10.6d4.1d0.4d0.0d0.0d

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

The windier part of the year lasts for 7.7 months, from October 1 to May 24, with average wind speeds of more than 10.0 miles per hour. The windiest month of the year in Monroe is March, with an average hourly wind speed of 12.2 miles per hour.

The calmer time of year lasts for 4.3 months, from May 24 to October 1. The calmest month of the year in Monroe is August, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed in Monroe

Average Wind Speed in MonroewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphMar 2212.4 mphMar 2212.4 mphAug 27.7 mphAug 27.7 mphOct 110.0 mphOct 110.0 mphMay 2410.0 mphMay 2410.0 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) 12.012.112.211.910.49.18.17.99.210.511.211.3

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

The wind is most often from the north for 2.1 months, from February 13 to April 15, with a peak percentage of 32% on March 7. The wind is most often from the south for 6.8 months, from April 26 to November 19, with a peak percentage of 39% on September 5. The wind is most often from the west for 2.8 months, from November 19 to February 13, with a peak percentage of 36% on January 1.

Wind Direction in Monroe

Wind Direction in MonroeWNESWJanFebMarAprMayJunJulAugSepOctNovDec0%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 Monroe 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 Monroe 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 Monroe

Tourism Score in Monroebest 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 Monroe 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 Monroe

Beach/Pool Score in Monroebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.25.20.00.0NowNowtemperaturetemperature 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 Monroe typically lasts for 5.8 months (176 days), from around April 20 to around October 13, rarely starting before April 1 or after May 9, and rarely ending before September 24 or after November 1.

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

Time Spent in Various Temperature Bands and the Growing Season in Monroegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2050%Apr 2050%Oct 1350%Oct 1350%May 990%May 990%Sep 2490%Sep 2490%Apr 110%Apr 110%Nov 110%Nov 110%Jul 18100%Jul 18100%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 Monroe should appear around April 18, only rarely appearing before April 6 or after May 1.

Growing Degree Days in Monroe

Growing Degree Days in MonroeJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FApr 1890°FApr 1890°FJun 24900°FJun 24900°FAug 41,800°FAug 41,800°FDec 312,903°FDec 312,903°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 5 to August 20, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year in Monroe is June, with an average of 6.8 kWh.

The darker period of the year lasts for 3.4 months, from October 30 to February 11, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest month of the year in Monroe is December, with an average of 1.7 kWh.

Average Daily Incident Shortwave Solar Energy in Monroe

Average Daily Incident Shortwave Solar Energy in MonroebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 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 211.6 kWhDec 211.6 kWhMay 55.9 kWhMay 55.9 kWhAug 205.9 kWhAug 205.9 kWhOct 302.7 kWhOct 302.7 kWhFeb 112.7 kWhFeb 112.7 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) 2.02.94.15.36.26.86.86.04.93.42.11.7

For the purposes of this report, the geographical coordinates of Monroe are 42.601 deg latitude, -89.638 deg longitude, and 1,050 ft elevation.

The topography within 2 miles of Monroe contains only modest variations in elevation, with a maximum elevation change of 177 feet and an average elevation above sea level of 1,045 feet. Within 10 miles also contains only modest variations in elevation (410 feet). Within 50 miles contains only modest variations in elevation (1,129 feet).

The area within 2 miles of Monroe is covered by cropland (67%) and artificial surfaces (33%), within 10 miles by cropland (96%), and within 50 miles by cropland (81%) and trees (12%).

This report illustrates the typical weather in Monroe, 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 Monroe.

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