Heishan, China Climate
The warmest month is July, with an average high of 31°C; the coldest is January, with an average low of -16°C. A normal year brings 515 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 23°C
- Normal low
- 10°C
- Reanalysis high
- 32°Cin 1998
- Reanalysis low
- 4°Cin 2013
- Chance of a wet day
- 20%
- Daylight
- 12 h 02 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | -5°C | -16°C | 6°C (2002) | -28°C (2001) | 3 mm | 0.0 |
| February | 0°C | -11°C | 13°C (2008) | -24°C (2006) | 6 mm | 0.0 |
| March | 8°C | -5°C | 26°C (2018) | -22°C (2007) | 9 mm | 3.1 |
| April | 18°C | 2°C | 35°C (2015) | -6°C (1993) | 27 mm | 3.0 |
| May | 25°C | 10°C | 37°C (2000) | 1°C (1995) | 50 mm | 6.2 |
| June | 29°C | 16°C | 42°C (2000) | 6°C (1992) | 78 mm | 12.0 |
| July | 31°C | 20°C | 44°C (2000) | 13°C (2006) | 124 mm | 12.4 |
| August | 30°C | 19°C | 41°C (2018) | 7°C (2017) | 130 mm | 12.4 |
| September | 26°C | 12°C | 37°C (2002) | 0°C (2014) | 42 mm | 6.0 |
| October | 17°C | 3°C | 29°C (2019) | -7°C (2016) | 28 mm | 6.2 |
| November | 6°C | -5°C | 20°C (2003) | -19°C (1992) | 15 mm | 3.0 |
| December | -3°C | -13°C | 10°C (2008) | -23°C (2012) | 3 mm | 0.0 |
| Year | 15°C | 3°C | 515 mm | 64 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
515 mm in a normal year, most in August.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Heishan.
The muggiest month is July, when 59 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | -16°C | 66% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -13°C | 60% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | -8°C | 54% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | -2°C | 52% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 5°C | 52% | 96% | 4% | 0% | 0% | 0% | 0% |
| June | 13°C | 62% | 38% | 31% | 25% | 5% | 0% | 0% |
| July | 19°C | 70% | 5% | 8% | 28% | 38% | 20% | 1% |
| August | 18°C | 72% | 9% | 15% | 23% | 31% | 19% | 2% |
| September | 10°C | 64% | 64% | 18% | 14% | 4% | 0% | 0% |
| October | 2°C | 61% | 95% | 4% | 1% | 0% | 0% | 0% |
| November | -7°C | 63% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | -14°C | 65% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is January, with the sky 37 percent covered on average; the cloudiest is July, at 69 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is April, averaging 20.2 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 21, with 15 h 13 min of daylight; the shortest is Dec 18, with 9 h 09 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Heishan in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.