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Climate and Average Weather Year Round in Black River New York, United States

In Black River, the summers are warm and partly cloudy and the winters are freezing, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from 11°F to 79°F and is rarely below -9°F or above 86°F.

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

Climate in Black River

freezingvery coldcoldcoolwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow65%65%27%27%overcastclearprecipitation: 3.6 inprecipitation: 3.6 in1.7 in1.7 inmuggy: 27%muggy: 27%0%0%drydrytourism score: 6.7tourism score: 6.70.00.0
Black River weather by month. Click on each chart for more information.

The warm season lasts for 3.8 months, from May 26 to September 18, with an average daily high temperature above 69°F. The hottest month of the year in Black River is July, with an average high of 78°F and low of 61°F.

The cold season lasts for 3.3 months, from December 4 to March 13, with an average daily high temperature below 38°F. The coldest month of the year in Black River is January, with an average low of 12°F and high of 28°F.

Average High and Low Temperature in Black River

Average High and Low Temperature in Black RiverwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-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 2927°FJan 2927°FJul 2679°FJul 2679°F11°F11°F61°F61°FMay 2669°FMay 2669°FSep 1869°FSep 1869°FDec 438°FDec 438°FMar 1338°FMar 1338°F50°F50°F51°F51°F25°F25°F21°F21°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
High28°F30°F40°F54°F66°F74°F78°F77°F69°F57°F45°F34°F
Temp20°F21°F31°F44°F56°F65°F70°F68°F60°F48°F38°F27°F
Low12°F14°F24°F36°F47°F56°F61°F59°F51°F41°F31°F20°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 Black River

Average Hourly Temperature in Black RiverJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingfreezingvery coldcoldcoldcoolcomfortablewarmvery coldcomfortable
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.

Bjni, Armenia (5,534 miles away) and Sapporo, Japan (6,005 miles) are the far-away foreign places with temperatures most similar to Black River (view comparison).

Map
Marker
© Esri, et al.

Compare Black River to another city:

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In Black River, 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 Black River begins around May 24 and lasts for 5.2 months, ending around November 1.

The clearest month of the year in Black River is August, 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 1 and lasts for 6.7 months, ending around May 24.

The cloudiest month of the year in Black River is January, during which on average the sky is overcast or mostly cloudy 72% of the time.

Cloud Cover Categories in Black River

Cloud Cover Categories in Black RiverclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 3065%Aug 3065%Jan 527%Jan 527%May 2446%May 2446%Nov 146%Nov 146%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
Cloudier72%68%62%57%54%48%39%36%39%48%59%68%
Clearer28%32%38%43%46%52%61%64%61%52%41%32%

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

The wetter season lasts 8.7 months, from April 8 to December 29, with a greater than 31% chance of a given day being a wet day. The month with the most wet days in Black River is June, with an average of 11.1 days with at least 0.04 inches of precipitation.

The drier season lasts 3.3 months, from December 29 to April 8. The month with the fewest wet days in Black River is February, with an average of 7.2 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. Based on this categorization, the most common form of precipitation in Black River changes throughout the year.

Rain alone is the most common for 9.8 months, from February 24 to December 19. The month with the most days of rain alone in Black River is June, with an average of 11.1 days.

Snow alone is the most common for 2.2 months, from December 19 to February 24. The month with the most days of snow alone in Black River is January, with an average of 4.0 days.

Daily Chance of Precipitation in Black River

Daily Chance of Precipitation in Black RiversnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 1638%Jun 1638%Feb 325%Feb 325%Dec 1931%Dec 1931%Apr 831%Apr 831%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
Rain2.4d2.3d4.9d8.6d10.1d11.1d11.4d10.4d10.5d10.6d7.4d4.1d
Mixed2.0d1.8d1.9d0.8d0.1d0.0d0.0d0.0d0.0d0.3d1.7d2.7d
Snow4.0d3.1d1.7d0.2d0.0d0.0d0.0d0.0d0.0d0.0d1.0d3.2d
Any8.4d7.2d8.5d9.6d10.2d11.1d11.4d10.4d10.5d11.0d10.1d10.0d

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. Black River experiences significant seasonal variation in monthly rainfall.

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

The month with the least rain in Black River is February, with an average rainfall of 0.9 inches.

Average Monthly Rainfall in Black River

Average Monthly Rainfall in Black RiverJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inSep 303.6 inSep 303.6 inFeb 60.9 inFeb 60.9 inJun 122.9 inJun 122.9 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
Rainfall1.0″0.9″1.3″2.4″2.7″2.9″2.8″2.8″3.3″3.5″2.6″1.6″

Snowfall

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

The snowy period of the year lasts for 5.9 months, from October 28 to April 24, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Black River is January, with an average snowfall of 8.8 inches.

The snowless period of the year lasts for 6.1 months, from April 24 to October 28. The least snow falls around July 26, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Black River

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
Snowfall8.8″8.6″6.3″1.6″0.1″0.0″0.0″0.0″0.0″0.3″3.2″8.5″

The length of the day in Black River varies significantly over the course of the year. In 2021, the shortest day is December 21, with 8 hours, 53 minutes of daylight; the longest day is June 20, with 15 hours, 29 minutes of daylight.

Hours of Daylight and Twilight in Black River

Hours of Daylight and Twilight in Black RiverJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 29 minJun 2015 hr, 29 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 228 hr, 53 minDec 218 hr, 53 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
Daylight9.3h10.5h12.0h13.5h14.8h15.4h15.1h13.9h12.4h10.9h9.6h8.9h

The earliest sunrise is at 5:19 AM on June 15, and the latest sunrise is 2 hours, 27 minutes later at 7:46 AM on November 6. The earliest sunset is at 4:24 PM on December 9, and the latest sunset is 4 hours, 25 minutes later at 8:50 PM on June 26.

Daylight saving time (DST) is observed in Black River during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.

Sunrise & Sunset with Twilight and Daylight Saving Time in Black River

Sunrise & Sunset with Twilight and Daylight Saving Time in Black RiverJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:19 AMJun 155:19 AM8:50 PMJun 268:50 PMJun 26Dec 94:24 PMDec 94:24 PM7:46 AMNov 67:46 AMNov 6Mar 14DSTMar 14DSTDSTNov 7DSTNov 7daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2021. 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 key lunar data for 2021. 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 Black River

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.

Black River experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.4 months, from June 5 to September 17, during which time the comfort level is muggy, oppressive, or miserable at least 7% of the time. The month with the most muggy days in Black River is July, with 7.6 days that are muggy or worse.

The least muggy day of the year is February 15, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Black River

Humidity Comfort Levels in Black RivermuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 150%Feb 150%Jul 2927%Jul 2927%Jun 57%Jun 57%Sep 177%Sep 177%NowNowmuggymuggycomfortablecomfortabledrydryoppressiveoppressive
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)0.0d0.0d0.0d0.0d0.7d3.5d7.6d6.2d2.2d0.1d0.0d0.0d

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 Black River experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.1 months, from November 9 to April 12, with average wind speeds of more than 7.0 miles per hour. The windiest month of the year in Black River is January, with an average hourly wind speed of 9.2 miles per hour.

The calmer time of year lasts for 6.9 months, from April 12 to November 9. The calmest month of the year in Black River is July, with an average hourly wind speed of 4.8 miles per hour.

Average Wind Speed in Black River

Average Wind Speed in Black RiverwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphJan 319.4 mphJan 319.4 mphJul 294.7 mphJul 294.7 mphNov 97.0 mphNov 97.0 mphApr 127.0 mphApr 127.0 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)9.29.18.16.85.44.94.84.95.56.47.38.2

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

The wind is most often from the south for 1.6 months, from August 26 to October 13, with a peak percentage of 37% on September 18. The wind is most often from the west for 10 months, from October 13 to August 26, with a peak percentage of 40% on January 1.

Wind Direction in Black River

Wind Direction in Black RiverWSWJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Black River 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 significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.7 months, from July 3 to September 24, with an average temperature above 64°F. The month of the year in Black River with the warmest water is August, with an average temperature of 71°F.

The time of year with cooler water lasts for 4.6 months, from December 18 to May 6, with an average temperature below 42°F. The month of the year in Black River with the coolest water is March, with an average temperature of 35°F.

Average Water Temperature in Black River

Average Water Temperature in Black RiverwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°FAug 972°FAug 972°F35°FMar 635°FMar 6Jul 364°FJul 364°FSep 2464°FSep 2464°FDec 1842°FDec 1842°FMay 642°FMay 642°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Water Temperature38°35°35°38°46°58°68°71°66°58°49°42°

To characterize how pleasant the weather is in Black River 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 Black River for general outdoor tourist activities is from late June to early September, with a peak score in the second week of August.

Tourism Score in Black River

Tourism Score in Black Riverbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.76.70.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Black River 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 Black River

Beach/Pool Score in Black Riverbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.84.80.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/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 Black River typically lasts for 5.2 months (161 days), from around May 1 to around October 9, rarely starting before April 14 or after May 18, and rarely ending before September 22 or after October 26.

Time Spent in Various Temperature Bands and the Growing Season in Black River

Time Spent in Various Temperature Bands and the Growing Season in Black Rivergrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 150%May 150%Oct 950%Oct 950%May 1890%May 1890%Sep 2290%Sep 2290%Apr 1410%Apr 1410%Oct 2610%Oct 2610%Jul 21100%Jul 21100%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 Black River should appear around April 29, only rarely appearing before April 15 or after May 10.

Growing Degree Days in Black River

Growing Degree Days in Black RiverJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 2990°FApr 2990°FJul 6900°FJul 6900°FAug 231,800°FAug 231,800°FDec 312,399°FDec 312,399°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 5 to August 23, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Black River is June, with an average of 6.6 kWh.

The darker period of the year lasts for 3.5 months, from October 30 to February 14, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest month of the year in Black River is December, with an average of 1.2 kWh.

Average Daily Incident Shortwave Solar Energy in Black River

Average Daily Incident Shortwave Solar Energy in Black RiverbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 306.8 kWhJun 306.8 kWhDec 251.2 kWhDec 251.2 kWhMay 55.7 kWhMay 55.7 kWhAug 235.7 kWhAug 235.7 kWhOct 302.3 kWhOct 302.3 kWhFeb 142.3 kWhFeb 142.3 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)1.52.33.64.96.06.66.65.84.52.91.71.2

For the purposes of this report, the geographical coordinates of Black River are 44.013 deg latitude, -75.794 deg longitude, and 564 ft elevation.

The topography within 2 miles of Black River contains only modest variations in elevation, with a maximum elevation change of 394 feet and an average elevation above sea level of 624 feet. Within 10 miles contains only modest variations in elevation (1,257 feet). Within 50 miles contains very significant variations in elevation (2,274 feet).

The area within 2 miles of Black River is covered by artificial surfaces (38%), trees (32%), and cropland (26%), within 10 miles by trees (42%) and cropland (42%), and within 50 miles by trees (57%) and water (19%).

This report illustrates the typical weather in Black River, 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 Black River.

For each station, the records are corrected for the elevation difference between that station and Black River 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 Black River is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Black River 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 Black River 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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.