Climate averages 1991–2020
Longnan 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.
Approximate: the model cell is 649 m higher than the city, so the temperatures are adjusted up by 4.2°C. For places not marked Approximate, the cell is within 400 m of the place's elevation.
December is a cold month in Longnan: daytime highs average 6.6°C and nights cool to about -1.2°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 11 mm of rain on roughly 4 days, which makes December a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 59 min on an average December day.
The nearest other city in this atlas is Pingwu County (116 km away). In December its highs average 8.0°C, 1.4°C warmer than Longnan, with 16 mm of rain.
Among the 884 cities listed in China, Longnan ranks joint 536th of 884 for the warmest December highs and joint 260th of 884 for the driest December (rainfall, lowest first). The mean December high of those 884 cities is 7.5°C; Longnan is 0.9°C cooler than that mean.
From December to January, average highs fall by 1.9°C to 4.8°C, and monthly rainfall rises from 11 mm to 14 mm.
The annual picture
December in context
Monthly rainfall
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
Longnan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.8°C-3.5°C | -3.5°C | 14 | 4.7 | 10.210 h |
| February | 7.6°C-0.7°C | -0.7°C | 20 | 6.1 | 11.011 h |
| March | 13.9°C5.2°C | 5.2°C | 39 | 10.6 | 12.012 h |
| April | 19.8°C10.7°C | 10.7°C | 62 | 12.0 | 13.013 h |
| May | 23.5°C15.2°C | 15.2°C | 94 | 15.0 | 13.914 h |
| June | 26.6°C19.0°C | 19.0°C | 108 | 14.9 | 14.314 h |
| July | 28.3°C21.3°C | 21.3°C | 152 | 16.8 | 14.114 h |
| August | 27.5°C20.6°C | 20.6°C | 131 | 16.6 | 13.413 h |
| September | 23.0°C17.0°C | 17.0°C | 128 | 16.6 | 12.412 h |
| October | 17.9°C11.6°C | 11.6°C | 90 | 15.4 | 11.411 h |
| November | 12.4°C5.2°C | 5.2°C | 31 | 7.7 | 10.510 h |
| December, selected | 6.6°C-1.2°C | -1.2°C | 11 | 3.6 | 10.010 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
- Pingwu County in DecemberChina · 116 kmHigh 8.0°C · Low 2.2°C · 16 mm rain
- Guangyuan in DecemberChina · 136 kmHigh 9.8°C · Low 2.7°C · 19 mm rain
- Luomen in DecemberChina · 151 kmHigh 4.0°C · Low -4.7°C · 7.2 mm rain
- Tianshui in DecemberChina · 152 kmHigh 4.9°C · Low -3.6°C · 9.7 mm rain
- Pan’an in DecemberChina · 152 kmHigh 3.9°C · Low -4.6°C · 7.2 mm rain
- Gangu Chengguanzhen in DecemberChina · 153 kmHigh 4.8°C · Low -3.8°C · 7.1 mm rain
- Xinxing in DecemberChina · 158 kmHigh 4.1°C · Low -4.3°C · 7.1 mm rain
- Beidao in DecemberChina · 158 kmHigh 4.9°C · Low -3.4°C · 11 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 Longnan) is explained once on the Longnan year overview and on the Sources, method and limits page.