Climate averages 1991–2020
Guyuan weather
in September.
A mild, wet month: the 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Guyuan: daytime highs average 18.7°C and nights cool to about 9.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 92 mm of rain on roughly 11 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Pingliang (64 km away). In September its highs average 20.3°C, 1.6°C warmer than Guyuan, with 116 mm of rain.
Among the 884 cities listed in China, Guyuan ranks joint 858th of 884 for the warmest September highs and joint 517th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Guyuan is 7.0°C cooler than that mean.
From September to October, average highs fall by 5.5°C to 13.2°C, and monthly rainfall falls from 92 mm to 56 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Guyuan climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.3°C-11.1°C | -11.1°C | 7.6 | 2.8 | 10.010 h |
| February | 3.0°C-7.7°C | -7.7°C | 11 | 3.4 | 10.911 h |
| March | 8.6°C-3.0°C | -3.0°C | 24 | 5.9 | 11.912 h |
| April | 15.0°C1.9°C | 1.9°C | 35 | 7.1 | 13.113 h |
| May | 19.5°C7.0°C | 7.0°C | 51 | 8.0 | 14.114 h |
| June | 23.3°C11.7°C | 11.7°C | 70 | 8.8 | 14.615 h |
| July | 24.8°C14.5°C | 14.5°C | 112 | 12.1 | 14.314 h |
| August | 23.3°C13.8°C | 13.8°C | 125 | 12.5 | 13.514 h |
| September, selected | 18.7°C9.4°C | 9.4°C | 92 | 11.1 | 12.412 h |
| October | 13.2°C3.0°C | 3.0°C | 56 | 9.4 | 11.311 h |
| November | 7.0°C-3.5°C | -3.5°C | 16 | 4.1 | 10.310 h |
| December | 1.5°C-8.7°C | -8.7°C | 4.5 | 1.8 | 9.810 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Pingliang in SeptemberChina · 64 kmHigh 20.3°C · Low 11.5°C · 116 mm rain
- Qingyang in SeptemberChina · 127 kmHigh 20.0°C · Low 11.0°C · 103 mm rain
- Xingguo in SeptemberChina · 139 kmHigh 21.8°C · Low 13.4°C · 108 mm rain
- Dingxi in SeptemberChina · 157 kmHigh 18.9°C · Low 9.2°C · 84 mm rain
- Xinxing in SeptemberChina · 162 kmHigh 21.5°C · Low 13.2°C · 95 mm rain
- Beidao in SeptemberChina · 164 kmHigh 21.9°C · Low 14.0°C · 115 mm rain
- Gangu Chengguanzhen in SeptemberChina · 166 kmHigh 21.9°C · Low 13.5°C · 95 mm rain
- Tianshui in SeptemberChina · 166 kmHigh 21.9°C · Low 13.9°C · 116 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Guyuan) is explained once on the Guyuan year overview and on the Sources, method and limits page.