Mellilä Weather in December
Average highs run from 2°C on December 1 to -1°C on December 31, and lows from -2°C to -7°C. Normal precipitation for the month is 63 mm over about 15 wet days.
December day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 0°C
- Average low
- -4°C
- Precipitation
- 63 mm
- Record high
- 10°CDec 6, 2006
- Record low
- -34°CDec 31, 1978
- Daylight
- 6 h 15 min to 5 h 46 min
- Cloud cover
- 76%
- Humidity
- 98%
- Dew point
- -4°C
- Wind
- 9.7 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 2°C | -2°C | 9°C 1986 | -18°C 1952 | 52% |
| Dec 2 | 3°C | -1°C | 9°C 1953 | -21°C 1985 | 52% |
| Dec 3 | 2°C | -2°C | 8°C 1954 | -17°C 1985 | 52% |
| Dec 4 | 1°C | -3°C | 9°C 1953 | -18°C 2023 | 52% |
| Dec 5 | 3°C | -3°C | 8°C 1979 | -20°C 1973 | 51% |
| Dec 6 | 2°C | -1°C | 10°C 2006 | -27°C 1973 | 50% |
| Dec 7 | 2°C | -3°C | 8°C 2000 | -23°C 1973 | 49% |
| Dec 8 | 2°C | -3°C | 8°C 2006 | -25°C 1973 | 48% |
| Dec 9 | 2°C | -2°C | 8°C 2006 | -26°C 1973 | 47% |
| Dec 10 | 2°C | -2°C | 8°C 2025 | -28°C 1973 | 48% |
| Dec 11 | 2°C | -2°C | 8°C 2025 | -23°C 1981 | 49% |
| Dec 12 | 2°C | -2°C | 7°C 2000 | -22°C 1989 | 48% |
| Dec 13 | 1°C | -3°C | 6°C 2000 | -21°C 1967 | 48% |
| Dec 14 | 1°C | -4°C | 9°C 2006 | -20°C 1989 | 48% |
| Dec 15 | 0°C | -4°C | 10°C 2006 | -29°C 1955 | 46% |
| Dec 16 | 1°C | -5°C | 7°C 2025 | -27°C 1978 | 45% |
| Dec 17 | 1°C | -4°C | 7°C 2025 | -26°C 1978 | 45% |
| Dec 18 | 0°C | -5°C | 7°C 2025 | -22°C 1985 | 44% |
| Dec 19 | 0°C | -5°C | 8°C 2025 | -21°C 1967 | 44% |
| Dec 20 | 0°C | -5°C | 8°C 2025 | -23°C 1969 | 45% |
| Dec 21 | -1°C | -6°C | 7°C 2020 | -25°C 1969 | 45% |
| Dec 22 | -1°C | -8°C | 7°C 1974 | -26°C 1969 | 46% |
| Dec 23 | -2°C | -7°C | 8°C 1974 | -24°C 1967 | 47% |
| Dec 24 | -1°C | -8°C | 8°C 2006 | -25°C 2010 | 47% |
| Dec 25 | -1°C | -7°C | 7°C 2025 | -24°C 1995 | 47% |
| Dec 26 | -1°C | -6°C | 7°C 2025 | -27°C 1996 | 46% |
| Dec 27 | -1°C | -6°C | 5°C 2006 | -26°C 1976 | 46% |
| Dec 28 | -1°C | -7°C | 6°C 2006 | -27°C 1976 | 46% |
| Dec 29 | -1°C | -6°C | 7°C 2007 | -27°C 1978 | 45% |
| Dec 30 | -1°C | -6°C | 7°C 2019 | -30°C 1978 | 45% |
| Dec 31 | -1°C | -7°C | 7°C 2006 | -34°C 1978 | 46% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- December 1
- sunrise 9:09 AM, sunset 3:24 PM
- December 31
- sunrise 9:38 AM, sunset 3:24 PM
Other months
Sources
Records: NOAA GHCN-Daily, station FIE00142511, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.