Jiayue, China Climate
The warmest month is July, with an average high of 32°C; the coldest is January, with an average low of -7°C. A normal year brings 689 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
- 25°C
- Normal low
- 13°C
- Reanalysis high
- 29°Cin 1999
- Reanalysis low
- 6°Cin 1995
- Chance of a wet day
- 21%
- Daylight
- 12 h 03 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 | 3°C | -7°C | 13°C (2002) | -20°C (2016) | 9 mm | 3.1 |
| February | 7°C | -5°C | 22°C (1996) | -17°C (2005) | 14 mm | 2.8 |
| March | 13°C | -1°C | 30°C (2018) | -10°C (2011) | 16 mm | 3.1 |
| April | 21°C | 6°C | 35°C (1994) | -4°C (1991) | 30 mm | 6.0 |
| May | 28°C | 12°C | 39°C (2014) | 3°C (1991) | 59 mm | 6.2 |
| June | 31°C | 18°C | 41°C (1997) | 9°C (1992) | 84 mm | 9.0 |
| July | 32°C | 21°C | 42°C (2002) | 15°C (2015) | 174 mm | 15.5 |
| August | 30°C | 21°C | 38°C (1997) | 11°C (2009) | 164 mm | 15.5 |
| September | 26°C | 15°C | 39°C (2002) | 6°C (1995) | 66 mm | 6.0 |
| October | 20°C | 8°C | 35°C (1998) | -3°C (1995) | 31 mm | 3.1 |
| November | 12°C | 1°C | 26°C (2006) | -13°C (1993) | 30 mm | 3.0 |
| December | 5°C | -5°C | 19°C (2010) | -17°C (2020) | 12 mm | 3.1 |
| Year | 19°C | 7°C | 689 mm | 76 |
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.
689 mm in a normal year, most in July.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Jiayue.
The muggiest month is July, when 79 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 | -8°C | 67% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -6°C | 65% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | -3°C | 60% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 3°C | 56% | 97% | 2% | 1% | 0% | 0% | 0% |
| May | 9°C | 56% | 81% | 15% | 4% | 0% | 0% | 0% |
| June | 15°C | 61% | 30% | 29% | 25% | 13% | 3% | 0% |
| July | 21°C | 74% | 1% | 5% | 15% | 35% | 26% | 18% |
| August | 20°C | 79% | 1% | 6% | 19% | 29% | 32% | 13% |
| September | 14°C | 73% | 32% | 25% | 28% | 12% | 2% | 0% |
| October | 7°C | 68% | 88% | 9% | 2% | 1% | 0% | 0% |
| November | 0°C | 69% | 99% | 1% | 0% | 0% | 0% | 0% |
| December | -6°C | 69% | 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 December, with the sky 45 percent covered on average; the cloudiest is July, at 68 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 17.3 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 18, with 14 h 37 min of daylight; the shortest is Dec 20, with 9 h 42 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 Jiayue 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.