Climate averages 1991–2020
Lanzhou weather
in December.
A cold, very dry month: the 11th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Lanzhou: daytime highs average 3.4°C and nights cool to about -5.7°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 2.0 mm of rain on fewer than one day, which makes December a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 46 min on an average December day.
The nearest other city in this atlas is Baiyin (62 km away). In December its highs average 0.9°C, 2.4°C cooler than Lanzhou, with 1.6 mm of precipitation.
Among the 884 cities listed in China, Lanzhou ranks joint 658th of 884 for the warmest December highs and 26th of 884 for the driest December (rainfall, lowest first). The mean December high of those 884 cities is 7.5°C; Lanzhou is 4.2°C cooler than that mean.
From December to January, average highs fall by 1.7°C to 1.7°C, and monthly precipitation rises from 2.0 mm to 4.2 mm.
The annual picture
December 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
Lanzhou climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.7°C-8.1°C | -8.1°C | 4.2 | 1.8 | 10.010 h |
| February | 6.0°C-5.0°C | -5.0°C | 5.8 | 1.9 | 10.811 h |
| March | 12.8°C0.0°C | 0.0°C | 13 | 3.8 | 11.912 h |
| April | 19.4°C5.5°C | 5.5°C | 24 | 5.6 | 13.113 h |
| May | 23.8°C10.7°C | 10.7°C | 44 | 8.0 | 14.114 h |
| June | 27.7°C15.3°C | 15.3°C | 57 | 9.0 | 14.615 h |
| July | 29.2°C17.6°C | 17.6°C | 86 | 12.3 | 14.414 h |
| August | 27.5°C16.7°C | 16.7°C | 100 | 13.2 | 13.514 h |
| September | 22.3°C12.3°C | 12.3°C | 72 | 11.7 | 12.412 h |
| October | 16.3°C6.1°C | 6.1°C | 41 | 9.0 | 11.311 h |
| November | 9.6°C-0.7°C | -0.7°C | 7.7 | 2.5 | 10.310 h |
| December, selected | 3.4°C-5.7°C | -5.7°C | 2.0 | 0.7 | 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
December in nearby cities
- Baiyin in DecemberChina · 62 kmHigh 0.9°C · Low -8.9°C · 1.6 mm precipitation
- Linxia Chengguanzhen in DecemberChina · 76 kmHigh 1.8°C · Low -8.7°C · 4.1 mm precipitation
- Dingxi in DecemberChina · 89 kmHigh 1.8°C · Low -7.9°C · 3.6 mm precipitation
- Nianbo in DecemberChina · 136 kmHigh 1.1°C · Low -10.7°C · 3.3 mm precipitation
- Tongren (Qinghai), China in DecemberChina · 175 kmHigh 1.0°C · Low -12.2°C · 6.0 mm precipitation
- Luomen in DecemberChina · 180 kmHigh 4.0°C · Low -4.7°C · 7.2 mm rain
- Pan’an in DecemberChina · 185 kmHigh 3.9°C · Low -4.6°C · 7.2 mm rain
- Xinxing in DecemberChina · 196 kmHigh 4.1°C · Low -4.3°C · 7.1 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 Lanzhou) is explained once on the Lanzhou year overview and on the Sources, method and limits page.