Climate averages 1991–2020
Siedlce weather
in December.
A cold month with moderate precipitation: the 11th warmest and the joint 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Siedlce: daytime highs average 1.3°C and nights cool to about -2.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 41 mm of precipitation on roughly 10 days, which makes December a month with moderate precipitation (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 7 h 49 min on an average December day.
The nearest other city in this atlas is Wawer (76 km away). In December its highs average 2.0°C, 0.7°C warmer than Siedlce, with 43 mm of precipitation.
Among the 60 cities listed in Poland, Siedlce ranks joint 57th of 60 for the warmest December highs and joint 12th of 60 for the driest December (precipitation, lowest first). The mean December high of those 60 cities is 2.4°C; Siedlce is 1.2°C cooler than that mean.
From December to January, average highs fall by 1.4°C to -0.1°C, and monthly precipitation stays at 41 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
Siedlce climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.1°C-4.5°C | -4.5°C | 41 | 9.9 | 8.38 h |
| February | 1.4°C-3.9°C | -3.9°C | 37 | 9.7 | 9.910 h |
| March | 6.1°C-1.1°C | -1.1°C | 42 | 10.6 | 11.812 h |
| April | 12.9°C4.0°C | 4.0°C | 46 | 9.7 | 13.914 h |
| May | 18.2°C9.4°C | 9.4°C | 70 | 12.2 | 15.716 h |
| June | 21.5°C13.0°C | 13.0°C | 73 | 11.8 | 16.717 h |
| July | 23.5°C15.3°C | 15.3°C | 83 | 13.0 | 16.216 h |
| August | 23.0°C14.9°C | 14.9°C | 64 | 10.4 | 14.715 h |
| September | 17.7°C10.6°C | 10.6°C | 57 | 9.4 | 12.713 h |
| October | 11.6°C5.8°C | 5.8°C | 46 | 9.4 | 10.711 h |
| November | 5.6°C1.5°C | 1.5°C | 39 | 9.5 | 8.99 h |
| December, selected | 1.3°C-2.6°C | -2.6°C | 41 | 9.9 | 7.88 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
- Wawer in DecemberPoland · 76 kmHigh 2.0°C · Low -2.1°C · 43 mm precipitation
- Praga Południe in DecemberPoland · 83 kmHigh 2.1°C · Low -2.0°C · 42 mm rain
- Warsaw in DecemberPoland · 87 kmHigh 2.0°C · Low -2.1°C · 42 mm precipitation
- Białołeka in DecemberPoland · 91 kmHigh 2.1°C · Low -2.1°C · 42 mm rain
- Bielany in DecemberPoland · 93 kmHigh 2.0°C · Low -2.0°C · 42 mm rain
- Brest in DecemberBelarus · 98 kmHigh 0.9°C · Low -3.2°C · 40 mm precipitation
- Lublin in DecemberPoland · 104 kmHigh 1.5°C · Low -2.5°C · 41 mm precipitation
- Radom in DecemberPoland · 116 kmHigh 2.1°C · Low -2.2°C · 38 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 Siedlce) is explained once on the Siedlce year overview and on the Sources, method and limits page.