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Climate and Average Weather Year Round in Caldwell Idaho, United States

In Caldwell, the summers are hot, dry, and mostly clear and the winters are very cold, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 23°F to 92°F and is rarely below 8°F or above 100°F.

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

Climate in Caldwell

very coldcoldcoolwarmhotwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow84%84%41%41%clearovercastprecipitation: 1.4 inprecipitation: 1.4 in0.2 in0.2 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.3tourism score: 7.30.00.0
Caldwell weather by month. Click on each chart for more information.

The hot season lasts for 3.0 months, from June 12 to September 11, with an average daily high temperature above 81°F. The hottest month of the year in Caldwell is July, with an average high of 91°F and low of 58°F.

The cold season lasts for 3.0 months, from November 18 to February 17, with an average daily high temperature below 47°F. The coldest month of the year in Caldwell is December, with an average low of 24°F and high of 37°F.

Average High and Low Temperature in Caldwell

Average High and Low Temperature in CaldwellhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 3135°FDec 3135°FJul 2692°FJul 2692°F23°F23°F59°F59°FJun 1281°FJun 1281°FSep 1181°FSep 1181°FFeb 1747°FFeb 1747°F52°F52°F49°F49°F30°F30°F29°F29°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 37°F46°F56°F64°F73°F82°F91°F89°F79°F65°F48°F37°F
Temp. 30°F35°F44°F50°F58°F66°F74°F72°F62°F50°F38°F30°F
Low 24°F29°F34°F39°F46°F53°F58°F56°F48°F39°F31°F24°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 Caldwell

Average Hourly Temperature in CaldwellJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingfreezingfreezingvery coldvery coldcoldcoldcoolwarmhotcomfortablecomfortablefreezing
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.

Ivankovci, Macedonia (5,999 miles away); Ankara, Turkey (6,365 miles); and Saqqez, Iran (6,820 miles) are the far-away foreign places with temperatures most similar to Caldwell (view comparison).

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In Caldwell, 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 Caldwell begins around June 8 and lasts for 4.1 months, ending around October 12.

The clearest month of the year in Caldwell is August, during which on average the sky is clear, mostly clear, or partly cloudy 82% of the time.

The cloudier part of the year begins around October 12 and lasts for 7.9 months, ending around June 8.

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

Cloud Cover Categories in Caldwell

Cloud Cover Categories in CaldwellclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2784%Jul 2784%Jan 1141%Jan 1141%Jun 862%Jun 862%Oct 1263%Oct 1263%NowNowclearmostly clearpartly cloudyovercastmostly 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 58%58%57%50%46%33%18%18%26%40%54%57%
Clearer 42%42%43%50%54%67%82%82%74%60%46%43%

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

The wetter season lasts 7.5 months, from October 21 to June 5, with a greater than 13% chance of a given day being a wet day. The month with the most wet days in Caldwell is December, with an average of 7.1 days with at least 0.04 inches of precipitation.

The drier season lasts 4.5 months, from June 5 to October 21. The month with the fewest wet days in Caldwell is July, with an average of 1.2 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 Caldwell is November, with an average of 5.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 20% on November 10.

Daily Chance of Precipitation in Caldwell

Daily Chance of Precipitation in CaldwellwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 3024%Nov 3024%Jul 203%Jul 203%Oct 2113%Oct 2113%Jun 513%Jun 513%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 4.0d4.4d5.6d4.7d5.4d3.1d1.2d1.3d2.3d3.9d5.6d4.5d
Mixed 1.0d0.6d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.4d1.2d
Snow 1.1d0.5d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.5d1.4d
Any 6.1d5.5d5.8d4.7d5.4d3.1d1.2d1.3d2.3d4.0d6.6d7.1d

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. Caldwell experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.7 months, from September 27 to June 17, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Caldwell is December, with an average rainfall of 1.1 inches.

The rainless period of the year lasts for 3.3 months, from June 17 to September 27. The month with the least rain in Caldwell is August, with an average rainfall of 0.2 inches.

Average Monthly Rainfall in Caldwell

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 0.8″0.8″0.9″0.8″0.9″0.5″0.2″0.2″0.4″0.7″1.0″1.1″

Snowfall

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

The snowy period of the year lasts for 3.1 months, from November 14 to February 18, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Caldwell is December, with an average snowfall of 3.2 inches.

The snowless period of the year lasts for 8.9 months, from February 18 to November 14. The least snow falls around July 9, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Caldwell

Average Monthly Snowfall in CaldwellsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inDec 263.5 inDec 263.5 inJul 90.0 inJul 90.0 inNov 141.0 inNov 141.0 inFeb 181.0 inFeb 181.0 inNowNow
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 2.6″1.1″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.0″1.0″3.2″

The length of the day in Caldwell varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 56 minutes of daylight; the longest day is June 20, with 15 hours, 27 minutes of daylight.

Hours of Daylight and Twilight in Caldwell

Hours of Daylight and Twilight in CaldwellJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 1912 hr, 8 minMar 1915 hr, 27 minJun 2015 hr, 27 minJun 2012 hr, 11 minSep 2212 hr, 11 minSep 228 hr, 56 minDec 218 hr, 56 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 9.4h10.5h12.0h13.5h14.8h15.4h15.0h13.9h12.5h11.0h9.7h9.0h

The earliest sunrise is at 6:04 AM on June 14, and the latest sunrise is 2 hours, 20 minutes later at 8:24 AM on November 2. The earliest sunset is at 5:09 PM on December 8, and the latest sunset is 4 hours, 23 minutes later at 9:32 PM on June 26.

Daylight saving time (DST) is observed in Caldwell 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 Caldwell

Sunrise & Sunset with Twilight and Daylight Saving Time in CaldwellJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 146:04 AMJun 146:04 AM9:32 PMJun 269:32 PMJun 26Dec 85:09 PMDec 85:09 PM8:24 AMNov 28:24 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 Caldwell

Solar Elevation and Azimuth in CaldwellJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM000101010102020203030304040506000010101020202020303040405050602370NowNow
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 Caldwell

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 Caldwell, 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 Caldwell

Humidity Comfort Levels in CaldwellJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 120%Mar 120%Aug 50%Aug 50%drydry
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 Caldwell experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.6 months, from February 7 to June 24, with average wind speeds of more than 6.6 miles per hour. The windiest month of the year in Caldwell is April, with an average hourly wind speed of 7.3 miles per hour.

The calmer time of year lasts for 7.4 months, from June 24 to February 7. The calmest month of the year in Caldwell is September, with an average hourly wind speed of 5.9 miles per hour.

Average Wind Speed in Caldwell

Average Wind Speed in CaldwellwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphMar 307.4 mphMar 307.4 mphSep 145.8 mphSep 145.8 mphFeb 76.6 mphFeb 76.6 mphJun 246.6 mphJun 246.6 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) 6.26.77.27.37.06.76.35.95.96.16.66.5

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

The wind is most often from the west for 1.7 months, from March 15 to May 5 and for 4.5 months, from June 10 to October 25, with a peak percentage of 41% on July 11. The wind is most often from the north for 1.2 months, from May 5 to June 10, with a peak percentage of 39% on June 8. The wind is most often from the south for 4.7 months, from October 25 to March 15, with a peak percentage of 36% on January 1.

Wind Direction in Caldwell

Wind Direction in CaldwellSWNWSJanFebMarAprMayJunJulAugSepOctNovDec0%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 Caldwell 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 Caldwell for general outdoor tourist activities is from late June to late August, with a peak score in the last week of July.

Tourism Score in Caldwell

Tourism Score in Caldwellbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.37.30.00.0NowNowtemperaturetemperature 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 Caldwell for hot-weather activities is from early July to mid August, with a peak score in the last week of July.

Beach/Pool Score in Caldwell

Beach/Pool Score in CaldwellJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.74.70.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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

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

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

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

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

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

The growing season in Caldwell typically lasts for 5.5 months (166 days), from around April 26 to around October 10, rarely starting before April 7 or after May 16, and rarely ending before September 19 or after November 3.

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

Time Spent in Various Temperature Bands and the Growing Season in Caldwellgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2650%Apr 2650%Oct 1050%Oct 1050%May 1690%May 1690%Sep 1990%Sep 1990%Apr 710%Apr 710%Nov 310%Nov 310%0%Feb 70%Feb 7Jul 15100%Jul 15100%NowNowfreezingvery 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 Caldwell should appear around April 7, only rarely appearing before March 25 or after April 26.

Growing Degree Days in Caldwell

Growing Degree Days in CaldwellJanFebMarAprMayJunJulAugSepOctNovDec0°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 25900°FJun 25900°FAug 41,800°FAug 41,800°FDec 312,918°FDec 312,918°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 3.3 months, from May 11 to August 20, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest month of the year in Caldwell is July, with an average of 8.0 kWh.

The darker period of the year lasts for 3.6 months, from October 29 to February 15, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest month of the year in Caldwell is December, with an average of 1.6 kWh.

Average Daily Incident Shortwave Solar Energy in Caldwell

Average Daily Incident Shortwave Solar Energy in CaldwellbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJul 18.1 kWhJul 18.1 kWhDec 211.6 kWhDec 211.6 kWhMay 116.8 kWhMay 116.8 kWhAug 206.8 kWhAug 206.8 kWhOct 292.9 kWhOct 292.9 kWhFeb 152.9 kWhFeb 152.9 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) 1.92.94.25.76.97.88.07.05.43.72.21.6

For the purposes of this report, the geographical coordinates of Caldwell are 43.663 deg latitude, -116.687 deg longitude, and 2,372 ft elevation.

The topography within 2 miles of Caldwell contains only modest variations in elevation, with a maximum elevation change of 115 feet and an average elevation above sea level of 2,384 feet. Within 10 miles contains only modest variations in elevation (587 feet). Within 50 miles contains significant variations in elevation (6,296 feet).

The area within 2 miles of Caldwell is covered by artificial surfaces (53%), cropland (27%), and shrubs (18%), within 10 miles by cropland (80%), and within 50 miles by shrubs (49%) and grassland (25%).

This report illustrates the typical weather in Caldwell, 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 Caldwell.

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