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Climate and Average Weather Year Round in Nellysford Virginia, United States

In Nellysford, 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 28°F to 87°F and is rarely below 15°F or above 94°F.

Based on the tourism score, the best times of year to visit Nellysford for warm-weather activities are for the entire month of June and from early August to late September.

Climate in Nellysford

coldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow66%66%48%48%clearovercastprecipitation: 3.5 inprecipitation: 3.5 in2.6 in2.6 inmuggy: 68%muggy: 68%0%0%drydrytourism score: 6.5tourism score: 6.50.50.5
Nellysford weather by month. Click on each chart for more information.

The hot season lasts for 3.6 months, from May 28 to September 14, with an average daily high temperature above 79°F. The hottest month of the year in Nellysford is July, with an average high of 87°F and low of 68°F.

The cold season lasts for 3.1 months, from November 28 to March 1, with an average daily high temperature below 54°F. The coldest month of the year in Nellysford is January, with an average low of 29°F and high of 46°F.

Average High and Low Temperature in Nellysford

Average High and Low Temperature in NellysfordhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2946°FJan 2946°FJul 2087°FJul 2087°F28°F28°F68°F68°FMay 2879°FMay 2879°FSep 1479°FSep 1479°FNov 2854°FNov 2854°FMar 154°FMar 154°F59°F59°F60°F60°F36°F36°F34°F34°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 46°F49°F58°F68°F76°F83°F87°F85°F78°F68°F58°F49°F
Temp. 36°F39°F47°F57°F65°F73°F77°F75°F68°F57°F48°F40°F
Low 29°F31°F38°F47°F56°F64°F68°F66°F59°F48°F39°F32°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 Nellysford

Average Hourly Temperature in NellysfordJanFebMarAprMayJunJulAugSepOctNovDec12 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 coldvery coldcoldcoldcoolcoolcomfortablewarmhot
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.

Conselice, Italy (4,491 miles away); Pedinó, Greece (5,097 miles); and Marneuli, Georgia (5,912 miles) are the far-away foreign places with temperatures most similar to Nellysford (view comparison).

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In Nellysford, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year in Nellysford begins around July 13 and lasts for 4.0 months, ending around November 12.

The clearest month of the year in Nellysford is September, during which on average the sky is clear, mostly clear, or partly cloudy 64% of the time.

The cloudier part of the year begins around November 12 and lasts for 8.0 months, ending around July 13.

The cloudiest month of the year in Nellysford is December, during which on average the sky is overcast or mostly cloudy 50% of the time.

Cloud Cover Categories in Nellysford

Cloud Cover Categories in NellysfordclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 2266%Sep 2266%Dec 2548%Dec 2548%Jul 1357%Jul 1357%Nov 1257%Nov 1257%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 50%50%48%47%48%45%42%38%36%37%44%50%
Clearer 50%50%52%53%52%55%58%62%64%63%56%50%

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

The wetter season lasts 4.3 months, from April 19 to August 28, with a greater than 30% chance of a given day being a wet day. The month with the most wet days in Nellysford is July, with an average of 12.2 days with at least 0.04 inches of precipitation.

The drier season lasts 7.7 months, from August 28 to April 19. The month with the fewest wet days in Nellysford is October, with an average of 6.4 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 Nellysford is July, with an average of 12.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 42% on July 14.

Daily Chance of Precipitation in Nellysford

Daily Chance of Precipitation in NellysfordwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 1442%Jul 1442%Oct 1919%Oct 1919%Apr 1930%Apr 1930%Aug 2830%Aug 2830%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 4.9d4.8d7.4d8.9d11.4d11.3d12.2d10.5d7.9d6.4d6.1d5.6d
Mixed 1.1d1.1d0.5d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d0.9d
Snow 0.9d0.8d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.4d
Any 6.8d6.7d8.1d8.9d11.4d11.3d12.2d10.5d7.9d6.4d6.3d6.9d

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. Nellysford experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Nellysford. The month with the most rain in Nellysford is May, with an average rainfall of 3.5 inches.

The month with the least rain in Nellysford is February, with an average rainfall of 2.1 inches.

Average Monthly Rainfall in Nellysford

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″2.9″3.3″3.5″3.2″3.2″3.2″3.4″3.2″3.1″2.6″

Snowfall

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

The snowy period of the year lasts for 4.1 months, from November 20 to March 24, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Nellysford is February, with an average snowfall of 5.4 inches.

The snowless period of the year lasts for 7.9 months, from March 24 to November 20. The least snow falls around July 20, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Nellysford

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 4.5″5.4″1.8″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.6″3.2″

The length of the day in Nellysford varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 32 minutes of daylight; the longest day is June 20, with 14 hours, 48 minutes of daylight.

Hours of Daylight and Twilight in Nellysford

Hours of Daylight and Twilight in NellysfordJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 48 minJun 2014 hr, 48 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 229 hr, 32 minDec 219 hr, 32 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 9.9h10.8h12.0h13.2h14.2h14.8h14.5h13.6h12.4h11.2h10.1h9.6h

The earliest sunrise is at 5:52 AM on June 13, and the latest sunrise is 1 hour, 50 minutes later at 7:42 AM on November 2. The earliest sunset is at 4:56 PM on December 5, and the latest sunset is 3 hours, 46 minutes later at 8:41 PM on June 27.

Daylight saving time (DST) is observed in Nellysford 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 Nellysford

Sunrise & Sunset with Twilight and Daylight Saving Time in NellysfordJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:52 AMJun 135:52 AM8:41 PMJun 278:41 PMJun 27Dec 54:56 PMDec 54:56 PM7:42 AMNov 27:42 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 Nellysford

Solar Elevation and Azimuth in NellysfordJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0001010101020202030303040404050506060700001010102020202030304040505060702976NowNow
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 Nellysford

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.

Nellysford experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.9 months, from May 24 to September 22, during which time the comfort level is muggy, oppressive, or miserable at least 17% of the time. The month with the most muggy days in Nellysford is July, with 19.8 days that are muggy or worse.

The month with the fewest muggy days in Nellysford is February, with 0.0 days that are muggy or worse.

Humidity Comfort Levels in Nellysford

Humidity Comfort Levels in NellysfordmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 90%Feb 90%Jul 2468%Jul 2468%May 2417%May 2417%Sep 2217%Sep 2217%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 0.0d0.0d0.0d0.2d3.3d12.0d19.8d17.0d7.4d1.2d0.1d0.0d

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 Nellysford experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.0 months, from November 3 to May 4, with average wind speeds of more than 4.4 miles per hour. The windiest month of the year in Nellysford is February, with an average hourly wind speed of 5.5 miles per hour.

The calmer time of year lasts for 6.0 months, from May 4 to November 3. The calmest month of the year in Nellysford is August, with an average hourly wind speed of 3.3 miles per hour.

Average Wind Speed in Nellysford

Average Wind Speed in NellysfordwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mphFeb 265.6 mphFeb 265.6 mphAug 63.3 mphAug 63.3 mphNov 34.4 mphNov 34.4 mphMay 44.4 mphMay 44.4 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) 5.25.55.45.04.13.73.43.33.74.24.64.8

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

The wind is most often from the north for 3.0 weeks, from August 28 to September 18, with a peak percentage of 29% on September 15. The wind is most often from the west for 11 months, from September 18 to August 28, with a peak percentage of 48% on January 1.

Wind Direction in Nellysford

Wind Direction in NellysfordWNWJanFebMarAprMayJunJulAugSepOctNovDec0%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 Nellysford 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 times of year to visit Nellysford for general outdoor tourist activities are for the entire month of June and from early August to late September, with a peak score in the first week of September.

Tourism Score in Nellysford

Tourism Score in Nellysfordbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.56.50.50.56.06.05.65.6NowNow 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 Nellysford for hot-weather activities is from mid June to early September, with a peak score in the third week of July.

Beach/Pool Score in Nellysford

Beach/Pool Score in Nellysfordbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.95.90.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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

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

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

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

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

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

The growing season in Nellysford typically lasts for 6.9 months (211 days), from around April 2 to around October 29, rarely starting before March 15 or after April 18, and rarely ending before October 10 or after November 17.

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

Time Spent in Various Temperature Bands and the Growing Season in Nellysfordgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 250%Apr 250%Oct 2950%Oct 2990%Apr 1890%Apr 1890%Oct 1090%Oct 1010%Mar 1510%Mar 1510%Nov 1710%Nov 170%Dec 240%Dec 24Jul 10100%Jul 10100%freezingvery coldcoldcoolcomfortablewarmhotfrigid
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 Nellysford should appear around March 10, only rarely appearing before February 23 or after March 26.

Growing Degree Days in Nellysford

Growing Degree Days in NellysfordJanFebMarAprMayJunJulAugSepOctNovDec0°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 1086°FMar 1086°FMay 30900°FMay 30900°FJul 81,800°FJul 81,800°FDec 314,162°FDec 314,162°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 3.8 months, from April 26 to August 19, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in Nellysford is June, with an average of 6.9 kWh.

The darker period of the year lasts for 3.0 months, from November 6 to February 8, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest month of the year in Nellysford is December, with an average of 2.2 kWh.

Average Daily Incident Shortwave Solar Energy in Nellysford

Average Daily Incident Shortwave Solar Energy in NellysfordbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 237.0 kWhJun 237.0 kWhDec 232.2 kWhDec 232.2 kWhApr 266.0 kWhApr 266.0 kWhAug 196.0 kWhAug 196.0 kWhNov 63.1 kWhNov 63.1 kWhFeb 83.1 kWhFeb 83.1 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) 2.53.44.65.76.46.96.76.15.24.02.82.2

For the purposes of this report, the geographical coordinates of Nellysford are 37.890 deg latitude, -78.872 deg longitude, and 676 ft elevation.

The topography within 2 miles of Nellysford contains very significant variations in elevation, with a maximum elevation change of 1,125 feet and an average elevation above sea level of 808 feet. Within 10 miles contains very significant variations in elevation (3,914 feet). Within 50 miles also contains extreme variations in elevation (4,390 feet).

The area within 2 miles of Nellysford is covered by trees (84%) and cropland (16%), within 10 miles by trees (94%), and within 50 miles by trees (77%) and cropland (21%).

This report illustrates the typical weather in Nellysford, 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 Nellysford.

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