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Climate and Average Weather Year Round in Baiyanghe China

In Baiyanghe, the summers are long, warm, and dry; the winters are freezing and snowy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 4°F to 88°F and is rarely below -7°F or above 97°F.

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

Climate in Baiyanghe

freezingcoolwarmhotwarmcoldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow75%75%52%52%clearovercastprecipitation: 0.9 inprecipitation: 0.9 in0.1 in0.1 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 7.7tourism score: 7.70.00.0
Baiyanghe weather by month. Click on each chart for more information.

The hot season lasts for 4.1 months, from May 13 to September 17, with an average daily high temperature above 74°F. The hottest month of the year in Baiyanghe is July, with an average high of 87°F and low of 70°F.

The cold season lasts for 3.4 months, from November 23 to March 4, with an average daily high temperature below 34°F. The coldest month of the year in Baiyanghe is January, with an average low of 5°F and high of 21°F.

Average High and Low Temperature in Baiyanghe

Average High and Low Temperature in BaiyanghehotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-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 1821°FJan 1821°FJul 2288°FJul 2288°F4°F4°F71°F71°FMay 1374°FMay 1374°FSep 1774°FSep 1774°FNov 2334°FNov 2334°FMar 434°FMar 434°F56°F56°F55°F55°F20°F20°F17°F17°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 21°F26°F43°F63°F75°F84°F87°F85°F75°F57°F38°F25°F
Temp. 11°F17°F34°F55°F67°F76°F79°F77°F66°F49°F31°F17°F
Low 5°F10°F27°F45°F58°F67°F70°F67°F56°F40°F24°F10°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 Baiyanghe

Average Hourly Temperature in BaiyangheJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfrigidfrigidfreezingfreezingcoldcoolcoolcomfortablewarmhotfrigidcoldfrigidwarmvery coldvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Richfield, Minnesota, United States (6,301 miles away) is the far-away foreign place with temperatures most similar to Baiyanghe (view comparison).

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In Baiyanghe, 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 Baiyanghe begins around July 7 and lasts for 3.6 months, ending around October 26.

The clearest month of the year in Baiyanghe is August, during which on average the sky is clear, mostly clear, or partly cloudy 74% of the time.

The cloudier part of the year begins around October 26 and lasts for 8.4 months, ending around July 7.

The cloudiest month of the year in Baiyanghe is February, during which on average the sky is overcast or mostly cloudy 47% of the time.

Cloud Cover Categories in Baiyanghe

Cloud Cover Categories in BaiyangheclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 1075%Aug 1075%Feb 1852%Feb 1852%Jul 764%Jul 764%Oct 2664%Oct 2664%NowNowclearmostly cloudyovercastmostly clearpartly 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 44%47%47%46%45%42%32%26%27%35%41%43%
Clearer 56%53%53%54%55%58%68%74%73%65%59%57%

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

The wetter season lasts 7.4 months, from March 22 to November 4, with a greater than 8% chance of a given day being a wet day. The month with the most wet days in Baiyanghe is July, with an average of 3.8 days with at least 0.04 inches of precipitation.

The drier season lasts 4.5 months, from November 4 to March 22. The month with the fewest wet days in Baiyanghe is January, with an average of 1.0 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 Baiyanghe changes throughout the year.

Rain alone is the most common for 8.0 months, from March 17 to November 14. The month with the most days of rain alone in Baiyanghe is July, with an average of 3.8 days.

Snow alone is the most common for 4.0 months, from November 14 to March 17. The month with the most days of snow alone in Baiyanghe is December, with an average of 1.3 days.

Daily Chance of Precipitation in Baiyanghe

Daily Chance of Precipitation in BaiyanghesnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 414%Jul 414%Jan 263%Jan 263%Mar 177%Mar 177%Nov 147%Nov 147%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 0.0d0.0d0.8d3.0d3.7d3.7d3.8d2.8d2.4d2.0d0.8d0.1d
Mixed 0.0d0.2d0.5d0.3d0.0d0.0d0.0d0.0d0.0d0.3d0.6d0.1d
Snow 1.0d0.9d0.7d0.2d0.0d0.0d0.0d0.0d0.0d0.2d0.8d1.3d
Any 1.0d1.1d2.1d3.5d3.7d3.7d3.8d2.8d2.4d2.4d2.2d1.5d

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. Baiyanghe experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.3 months, from April 3 to October 12, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Baiyanghe is July, with an average rainfall of 0.9 inches.

The rainless period of the year lasts for 5.7 months, from October 12 to April 3. The month with the least rain in Baiyanghe is January, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Baiyanghe

Average Monthly Rainfall in BaiyangherainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 inJul 130.9 inJul 130.9 inJan 110.0 inJan 110.0 inMay 70.9 inMay 70.9 inApr 30.5 inApr 30.5 inOct 120.5 inOct 120.5 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 0.0″0.0″0.2″0.7″0.9″0.9″0.9″0.7″0.6″0.5″0.2″0.0″

Snowfall

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

The snowy period of the year lasts for 5.0 months, from November 4 to April 3, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Baiyanghe is December, with an average snowfall of 1.8 inches.

The snowless period of the year lasts for 7.0 months, from April 3 to November 4. The least snow falls around July 16, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Baiyanghe

Average Monthly Snowfall in BaiyanghesnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inDec 62.0 inDec 62.0 inJul 160.0 inJul 160.0 inMar 81.7 inMar 81.7 inJan 211.1 inJan 211.1 inNov 41.0 inNov 41.0 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 1.2″1.5″1.6″0.6″0.0″0.0″0.0″0.0″0.0″0.4″1.5″1.8″

The length of the day in Baiyanghe varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 53 minutes of daylight; the longest day is June 21, with 15 hours, 29 minutes of daylight.

Hours of Daylight and Twilight in Baiyanghe

Hours of Daylight and Twilight in BaiyangheJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2015 hr, 29 minJun 2115 hr, 29 minJun 2112 hr, 10 minSep 2212 hr, 10 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
Daylight 9.3h10.5h12.0h13.5h14.8h15.4h15.1h13.9h12.5h11.0h9.6h9.0h

The earliest sunrise is at 4:25 AM on June 15, and the latest sunrise is 3 hours, 18 minutes later at 7:43 AM on January 4. The earliest sunset is at 4:30 PM on December 9, and the latest sunset is 3 hours, 25 minutes later at 7:56 PM on June 26.

Daylight saving time (DST) is not observed in Baiyanghe during 2024.

Sunrise & Sunset with Twilight in Baiyanghe

Sunrise & Sunset with Twilight in BaiyangheJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 154:25 AMJun 154:25 AM7:56 PMJun 267:56 PMJun 26Dec 94:30 PMDec 94:30 PM7:43 AMJan 47:43 AMJan 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 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 Baiyanghe

Solar Elevation and Azimuth in BaiyangheJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00001010101020202020303030404050600000101010102020202030303040405050602369NowNow
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 Baiyanghe

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 Baiyanghe, 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, staying within 1% of 1% throughout.

Humidity Comfort Levels in Baiyanghe

Humidity Comfort Levels in BaiyangheJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 150%Mar 150%Jul 271%Jul 271%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 0.0d0.0d0.0d0.0d0.0d0.0d0.2d0.1d0.0d0.0d0.0d0.0d

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

The windier part of the year lasts for 6.5 months, from March 19 to October 2, with average wind speeds of more than 6.5 miles per hour. The windiest month of the year in Baiyanghe is May, with an average hourly wind speed of 7.9 miles per hour.

The calmer time of year lasts for 5.5 months, from October 2 to March 19. The calmest month of the year in Baiyanghe is January, with an average hourly wind speed of 5.3 miles per hour.

Average Wind Speed in Baiyanghe

Average Wind Speed in BaiyanghewindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphMay 68.0 mphMay 68.0 mphJan 315.1 mphJan 315.1 mphMar 196.5 mphMar 196.5 mphOct 26.5 mphOct 26.5 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) 5.35.46.47.67.97.67.37.06.76.45.95.6

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

The wind is most often from the north for 5.6 months, from March 31 to September 18, with a peak percentage of 41% on July 31. The wind is most often from the south for 6.4 months, from September 18 to March 31, with a peak percentage of 59% on January 1.

Wind Direction in Baiyanghe

Wind Direction in BaiyangheSNSJanFebMarAprMayJunJulAugSepOctNovDec0%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 Baiyanghe 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 Baiyanghe for general outdoor tourist activities is from early June to mid September, with a peak score in the third week of August.

Tourism Score in Baiyanghe

Tourism Score in Baiyanghebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.77.70.00.0NowNowtemperaturetemperature 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 Baiyanghe for hot-weather activities is from late June to mid August, with a peak score in the last week of July.

Beach/Pool Score in Baiyanghe

Beach/Pool Score in Baiyanghebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.27.20.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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

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

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

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

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

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

The growing season in Baiyanghe typically lasts for 6.5 months (198 days), from around April 7 to around October 22, rarely starting before March 19 or after April 26, and rarely ending before October 4 or after November 10.

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

Time Spent in Various Temperature Bands and the Growing Season in Baiyanghegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 750%Apr 750%Oct 2250%Oct 2290%Apr 2690%Apr 2690%Oct 490%Oct 410%Mar 1910%Mar 1910%Nov 1010%Nov 100%Dec 180%Dec 18Jul 14100%Jul 14100%frigidfreezingcomfortablewarmhotcoolcoldvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The 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 Baiyanghe should appear around April 12, only rarely appearing before April 4 or after April 22.

Growing Degree Days in Baiyanghe

Growing Degree Days in BaiyangheJanFebMarAprMayJunJulAugSepOctNovDec0°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°FApr 1289°FApr 1289°FJun 5900°FJun 5900°FJul 101,800°FJul 101,800°FDec 313,809°FDec 313,809°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 4.1 months, from April 23 to August 25, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest month of the year in Baiyanghe is June, with an average of 7.2 kWh.

The darker period of the year lasts for 3.3 months, from November 1 to February 11, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest month of the year in Baiyanghe is December, with an average of 1.8 kWh.

Average Daily Incident Shortwave Solar Energy in Baiyanghe

Average Daily Incident Shortwave Solar Energy in BaiyanghebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 287.2 kWhJun 287.2 kWhDec 191.8 kWhDec 191.8 kWhApr 236.1 kWhApr 236.1 kWhAug 256.1 kWhAug 256.1 kWhNov 12.9 kWhNov 12.9 kWhFeb 112.9 kWhFeb 112.9 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) 2.13.14.55.86.87.27.06.45.23.62.41.8

For the purposes of this report, the geographical coordinates of Baiyanghe are 44.019 deg latitude, 87.765 deg longitude, and 2,044 ft elevation.

The topography within 2 miles of Baiyanghe contains only modest variations in elevation, with a maximum elevation change of 358 feet and an average elevation above sea level of 2,082 feet. Within 10 miles contains only modest variations in elevation (2,247 feet). Within 50 miles contains large variations in elevation (16,506 feet).

The area within 2 miles of Baiyanghe is covered by grassland (92%), within 10 miles by grassland (81%) and cropland (11%), and within 50 miles by grassland (68%) and cropland (12%).

This report illustrates the typical weather in Baiyanghe, 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 is only a single weather station, Ürümqi Diwopu International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Baiyanghe.

At a distance of 26 kilometers from Baiyanghe, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Baiyanghe according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.