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Average Weather in Heishui China

In Heishui, the summers are long, warm, and partly cloudy and the winters are frigid, dry, and mostly clear. Over the course of the year, the temperature typically varies from -6°F to 87°F and is rarely below -16°F or above 96°F.

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

Climate Summary

frigidfreezingcoolwarmhotwarmfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow74%74%54%54%clearovercastprecipitation: 3.5 inprecipitation: 3.5 in0.0 in0.0 inmuggy: 33%muggy: 33%0%0%drydrytourism score: 7.0tourism score: 7.00.00.0
Click on each chart for more information.

Temperature

The hot season lasts for 4.1 months, from May 12 to September 16, with an average daily high temperature above 72°F. The hottest day of the year is July 20, with an average high of 87°F and low of 66°F.

The cold season lasts for 3.0 months, from November 23 to February 24, with an average daily high temperature below 27°F. The coldest day of the year is January 14, with an average low of -6°F and high of 12°F.

Average High and Low Temperature

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.

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

Average Hourly Temperature in HeishuiJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMNowNowfrigidfrigidcoolcoolcomfortablewarmhotcoldcoldfreezingfreezingvery 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.

Winnipeg, Canada (5,449 miles away) and Burlin, Kazakhstan (3,128 miles) are the far-away foreign places with temperatures most similar to Heishui (view comparison).

Clouds

In Heishui, 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 Heishui begins around August 11 and lasts for 7.3 months, ending around March 21. On January 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 26% of the time.

The cloudier part of the year begins around March 21 and lasts for 4.7 months, ending around August 11. On June 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 46% of the time, and clear, mostly clear, or partly cloudy 54% of the time.

Cloud Cover Categories

Cloud Cover Categories in HeishuiclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jan 2274%Jan 2274%Jun 1954%Jun 1954%Aug 1164%Aug 1164%Mar 2164%Mar 2164%NowNowclearovercastmostly clear
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.

Precipitation

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

The wetter season lasts 3.0 months, from May 28 to August 29, with a greater than 20% chance of a given day being a wet day. The chance of a wet day peaks at 40% on July 8.

The drier season lasts 9.0 months, from August 29 to May 28. The smallest chance of a wet day is 0% on January 28.

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 Heishui changes throughout the year.

Rain alone is the most common for 7.5 months, from March 22 to November 6. The highest chance of a day with rain alone is 40% on July 8.

Snow alone is the most common for 4.5 months, from November 6 to March 22. The highest chance of a day with snow alone is 2% on March 8.

Daily Chance of Precipitation

Daily Chance of Precipitation in HeishuisnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 840%Jul 840%Jan 280%Jan 280%Mar 224%Mar 224%Nov 63%Nov 63%May 2820%May 2820%Aug 2920%Aug 2920%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).

Rainfall

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. Heishui experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 5.9 months, from April 16 to October 11, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 15, with an average total accumulation of 3.5 inches.

The rainless period of the year lasts for 6.1 months, from October 11 to April 16. The least rain falls around January 25, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Sun

The length of the day in Heishui varies significantly over the course of the year. In 2020, the shortest day is December 21, with 8 hours, 44 minutes of daylight; the longest day is June 21, with 15 hours, 39 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in HeishuiJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2015 hr, 39 minJun 2115 hr, 39 minJun 2112 hr, 11 minSep 2212 hr, 11 minSep 228 hr, 44 minDec 218 hr, 44 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.

The earliest sunrise is at 4:00 AM on June 16, and the latest sunrise is 3 hours, 27 minutes later at 7:27 AM on January 3. The earliest sunset is at 4:06 PM on December 10, and the latest sunset is 3 hours, 34 minutes later at 7:40 PM on June 26.

Daylight saving time (DST) is not observed in Heishui during 2020.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in HeishuiJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 164:00 AMJun 164:00 AM7:40 PMJun 267:40 PMJun 26Dec 104:06 PMDec 104:06 PM7:27 AMJan 37:27 AMJan 3daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2020. 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.

Humidity

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.

Heishui experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 1.9 months, from June 28 to August 24, during which time the comfort level is muggy, oppressive, or miserable at least 8% of the time. The muggiest day of the year is July 29, with muggy conditions 33% of the time.

The least muggy day of the year is March 10, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in HeishuimuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Mar 100%Mar 100%Jul 2933%Jul 2933%Jun 288%Jun 288%Aug 248%Aug 248%NowNowdrydryhumidhumidcomfortablecomfortableoppressiveoppressive
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.

Wind

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 Heishui experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 3.3 months, from February 28 to June 5, with average wind speeds of more than 9.8 miles per hour. The windiest day of the year is April 20, with an average hourly wind speed of 12.1 miles per hour.

The calmer time of year lasts for 8.8 months, from June 5 to February 28. The calmest day of the year is August 7, with an average hourly wind speed of 7.5 miles per hour.

Average Wind Speed

Average Wind Speed in HeishuiwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mph16 mph18 mph20 mphApr 2012.1 mphApr 2012.1 mphAug 77.5 mphAug 77.5 mphFeb 289.8 mphFeb 289.8 mphJun 59.8 mphJun 59.8 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the south for 2.8 months, from May 27 to August 21, with a peak percentage of 41% on July 7. The wind is most often from the north for 1.2 months, from August 21 to September 27 and for 5.7 months, from December 5 to May 27, with a peak percentage of 33% on August 28. The wind is most often from the west for 2.3 months, from September 27 to December 5, with a peak percentage of 41% on December 1.

Wind Direction

Wind Direction in HeishuiNSNWNJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Best Time of Year to Visit

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

Tourism Score

Tourism Score in Heishuibest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.07.00.00.0NowNow precipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 Heishui for hot-weather activities is from mid July to early August, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score in HeishuiJanFebMarAprMayJunJulAugSepOctNovDec02468104.94.90.00.0NowNow precipitationprecipitationcloudscloudstemperaturetemperaturebeach/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.

Growing Season

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 Heishui typically lasts for 5.2 months (158 days), from around April 28 to around October 3, rarely starting before April 14 or after May 12, and rarely ending before September 18 or after October 18.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Heishuigrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2850%Apr 2850%Oct 350%Oct 350%May 1290%May 1290%Sep 1890%Sep 1890%Apr 1410%Apr 1410%Oct 1810%Oct 1810%Jul 16100%Jul 16100%NowNowfrigidcomfortablewarmcoolhotcoldfreezingvery 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 Heishui should appear around April 27, only rarely appearing before April 19 or after May 5.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.9 months, from April 18 to August 16, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest day of the year is May 30, with an average of 6.7 kWh.

The darker period of the year lasts for 3.1 months, from November 1 to February 4, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest day of the year is December 22, with an average of 1.7 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in HeishuibrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhMay 306.7 kWhMay 306.7 kWhDec 221.7 kWhDec 221.7 kWhApr 185.7 kWhApr 185.7 kWhAug 165.7 kWhAug 165.7 kWhFeb 42.7 kWhFeb 42.7 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.

Topography

For the purposes of this report, the geographical coordinates of Heishui are 45.200 deg latitude, 122.817 deg longitude, and 482 ft elevation.

The topography within 2 miles of Heishui is essentially flat, with a maximum elevation change of 39 feet and an average elevation above sea level of 482 feet. Within 10 miles is also essentially flat (79 feet). Within 50 miles is essentially flat (1,014 feet).

The area within 2 miles of Heishui is covered by cropland (68%), trees (14%), and shrubs (12%), within 10 miles by cropland (41%) and grassland (40%), and within 50 miles by grassland (43%) and cropland (33%).

Data Sources

This report illustrates the typical weather in Heishui, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Heishui is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Heishui, according to the International Standard Atmosphere .

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.

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 aiports 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.