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Climate and Average Weather Year Round in Calistoga California, United States

In Calistoga, the summers are long, hot, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. Over the course of the year, the temperature typically varies from 36°F to 88°F and is rarely below 27°F or above 99°F.

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

Climate in Calistoga

coldcoolcomfortablewarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow91%91%41%41%clearovercastprecipitation: 5.6 inprecipitation: 5.6 in0.0 in0.0 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.0tourism score: 7.00.40.4
Calistoga weather by month. Click on each chart for more information.

The hot season lasts for 4.0 months, from June 5 to October 4, with an average daily high temperature above 81°F. The hottest month of the year in Calistoga is July, with an average high of 88°F and low of 55°F.

The cool season lasts for 2.9 months, from November 23 to February 21, with an average daily high temperature below 60°F. The coldest month of the year in Calistoga is December, with an average low of 36°F and high of 54°F.

Average High and Low Temperature in Calistoga

Average High and Low Temperature in CalistogahotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 3153°FDec 3153°FJul 1688°FJul 1688°F36°F36°F55°F55°FJun 581°FJun 581°FOct 481°FOct 481°FFeb 2160°FFeb 2160°F51°F51°F49°F49°F39°F39°F39°F39°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 55°F59°F63°F69°F76°F84°F88°F88°F85°F76°F63°F54°F
Temp. 44°F48°F51°F54°F60°F67°F69°F68°F66°F59°F50°F44°F
Low 37°F39°F41°F43°F48°F52°F55°F54°F52°F46°F41°F36°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 Calistoga

Average Hourly Temperature in CalistogaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowvery coldvery coldvery coldvery coldcoldcoldcoolcomfortablewarmhot
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.

Puente Alto, Chile (6,005 miles away); Sertã, Portugal (5,627 miles); and Benalla, Australia (7,801 miles) are the far-away foreign places with temperatures most similar to Calistoga (view comparison).

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

The clearer part of the year in Calistoga begins around May 15 and lasts for 5.2 months, ending around October 22.

The clearest month of the year in Calistoga is July, during which on average the sky is clear, mostly clear, or partly cloudy 90% of the time.

The cloudier part of the year begins around October 22 and lasts for 6.8 months, ending around May 15.

The cloudiest month of the year in Calistoga is January, during which on average the sky is overcast or mostly cloudy 57% of the time.

Cloud Cover Categories in Calistoga

Cloud Cover Categories in CalistogaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1991%Jul 1991%Jan 1041%Jan 1041%May 1566%May 1566%Oct 2266%Oct 2266%NowNowclearovercastmostly clearmostly cloudy
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 57%57%53%44%34%20%10%10%14%30%48%55%
Clearer 43%43%47%56%66%80%90%90%86%70%52%45%

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

The wetter season lasts 5.3 months, from October 30 to April 9, with a greater than 17% chance of a given day being a wet day. The month with the most wet days in Calistoga is February, with an average of 9.1 days with at least 0.04 inches of precipitation.

The drier season lasts 6.6 months, from April 9 to October 30. The month with the fewest wet days in Calistoga is July, with an average of 0.2 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Calistoga is February, with an average of 9.1 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 33% on February 20.

Daily Chance of Precipitation in Calistoga

Daily Chance of Precipitation in CalistogawetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 2033%Feb 2033%Jul 180%Jul 180%Oct 3017%Oct 3017%Apr 917%Apr 917%NowNowrain
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 8.9d9.1d8.2d4.5d2.4d0.8d0.2d0.2d0.9d3.3d6.9d9.1d
Mixed 0.2d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.2d
Any 9.1d9.1d8.2d4.5d2.4d0.8d0.2d0.2d0.9d3.3d7.0d9.3d

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. Calistoga experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.0 months, from September 28 to May 29, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Calistoga is February, with an average rainfall of 5.6 inches.

The rainless period of the year lasts for 4.0 months, from May 29 to September 28. The month with the least rain in Calistoga is July, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Calistoga

Average Monthly Rainfall in CalistogarainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inFeb 165.6 inFeb 165.6 inJul 280.0 inJul 280.0 inDec 285.3 inDec 285.3 inSep 280.5 inSep 280.5 inMay 290.5 inMay 290.5 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 5.1″5.6″3.8″1.6″0.7″0.2″0.0″0.0″0.3″1.4″3.5″5.3″

The length of the day in Calistoga varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 28 minutes of daylight; the longest day is June 20, with 14 hours, 52 minutes of daylight.

Hours of Daylight and Twilight in Calistoga

Hours of Daylight and Twilight in CalistogaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 1912 hr, 8 minMar 1914 hr, 52 minJun 2014 hr, 52 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 229 hr, 28 minDec 219 hr, 28 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 9.8h10.8h12.0h13.3h14.3h14.8h14.5h13.6h12.4h11.1h10.1h9.5h

The earliest sunrise is at 5:45 AM on June 13, and the latest sunrise is 1 hour, 53 minutes later at 7:38 AM on November 2. The earliest sunset is at 4:48 PM on December 6, and the latest sunset is 3 hours, 50 minutes later at 8:38 PM on June 27.

Daylight saving time (DST) is observed in Calistoga 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 Calistoga

Sunrise & Sunset with Twilight and Daylight Saving Time in CalistogaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:45 AMJun 135:45 AM8:38 PMJun 278:38 PMJun 27Dec 64:48 PMDec 64:48 PM7:38 AMNov 27:38 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 Calistoga

Solar Elevation and Azimuth in CalistogaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0001010101020202030303040404050506060700001010102020202030304040505060702875NowNow
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 Calistoga

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.

The perceived humidity level in Calistoga, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels in Calistoga

Humidity Comfort Levels in CalistogaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 270%Dec 270%Apr 230%Apr 230%drydrycomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

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 Calistoga does not vary significantly over the course of the year, remaining within 0.5 miles per hour of 6.6 miles per hour throughout.

Average Wind Speed in Calistoga

Average Wind Speed in CalistogaJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph11 mph11 mphMay 297.1 mphMay 297.1 mphOct 286.1 mphOct 286.1 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) 6.56.66.87.07.07.06.66.36.26.26.36.7

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

The wind is most often from the west for 7.3 months, from March 4 to October 13, with a peak percentage of 70% on July 30. The wind is most often from the north for 4.7 months, from October 13 to March 4, with a peak percentage of 51% on January 1.

Wind Direction in Calistoga

Wind Direction in CalistogaNWNJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestnorthsoutheast
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).

Calistoga is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.5 months, from August 13 to October 29, with an average temperature above 56°F. The month of the year in Calistoga with the warmest water is September, with an average temperature of 56°F.

The time of year with cooler water lasts for 3.1 months, from March 25 to June 28, with an average temperature below 53°F. The month of the year in Calistoga with the coolest water is May, with an average temperature of 52°F.

Average Water Temperature in Calistoga

Average Water Temperature in CalistogawarmcoolJanFebMarAprMayJunJulAugSepOctNovDec48°F48°F50°F50°F52°F52°F54°F54°F56°F56°F58°F58°F60°F60°FSep 2257°FSep 2257°F52°FMay 1152°FMay 11Aug 1356°FAug 1356°FOct 2956°FOct 2956°FMar 2553°FMar 2553°FJun 2853°FJun 2853°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 53°F53°F53°F52°F52°F52°F54°F56°F56°F56°F55°F53°F

To characterize how pleasant the weather is in Calistoga 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 Calistoga for general outdoor tourist activities is from late June to early September, with a peak score in the last week of July.

Tourism Score in Calistoga

Tourism Score in Calistogabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.07.00.40.4NowNow 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 Calistoga for hot-weather activities is from late June to late August, with a peak score in the third week of July.

Beach/Pool Score in Calistoga

Beach/Pool Score in Calistogabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810103.33.30.00.0NowNowtemperaturetemperature 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 Calistoga typically lasts for 8.3 months (255 days), from around March 10 to around November 19, rarely starting before February 4 or after April 17, and rarely ending before October 31 or after December 11.

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

Time Spent in Various Temperature Bands and the Growing Season in Calistogagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 1050%Mar 1050%Nov 1950%Nov 1990%Apr 1790%Apr 1790%Oct 3190%Oct 3110%Feb 410%Feb 410%Dec 1110%Dec 110%Jan 130%Jan 13Aug 2100%Aug 2100%NowNowvery coldcoldcoolcomfortablewarmhot
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 Calistoga should appear around February 26, only rarely appearing before February 11 or after March 14.

Growing Degree Days in Calistoga

Growing Degree Days in CalistogaJanFebMarAprMayJunJulAugSepOctNovDec0°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°FFeb 2690°FFeb 2690°FJun 10900°FJun 10900°FJul 311,800°FJul 311,800°FDec 313,289°FDec 313,289°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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.5 months, from May 8 to August 24, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year in Calistoga is July, with an average of 8.3 kWh.

The darker period of the year lasts for 3.6 months, from November 2 to February 20, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest month of the year in Calistoga is December, with an average of 2.1 kWh.

Average Daily Incident Shortwave Solar Energy in Calistoga

Average Daily Incident Shortwave Solar Energy in CalistogabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJun 288.5 kWhJun 288.5 kWhDec 252.0 kWhDec 252.0 kWhMay 87.2 kWhMay 87.2 kWhAug 247.2 kWhAug 247.2 kWhNov 23.3 kWhNov 23.3 kWhFeb 203.3 kWhFeb 203.3 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) 2.33.24.66.27.48.38.37.56.04.32.72.1

For the purposes of this report, the geographical coordinates of Calistoga are 38.579 deg latitude, -122.580 deg longitude, and 344 ft elevation.

The topography within 2 miles of Calistoga contains very significant variations in elevation, with a maximum elevation change of 1,378 feet and an average elevation above sea level of 609 feet. Within 10 miles contains very significant variations in elevation (4,144 feet). Within 50 miles also contains extreme variations in elevation (6,102 feet).

The area within 2 miles of Calistoga is covered by cropland (40%), trees (26%), and shrubs (25%), within 10 miles by shrubs (43%) and trees (31%), and within 50 miles by shrubs (26%) and grassland (22%).

This report illustrates the typical weather in Calistoga, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Calistoga.

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