Forssa Weather in December
Average highs run from -1°C on December 1 to -4°C on December 31, and lows from -5°C to -9°C. Normal precipitation for the month is 62 mm over about 16 wet days.
December day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
December at a glance
- Average high
- -3°C
- Average low
- -7°C
- Precipitation
- 62 mm
- Reanalysis high
- 8°CDec 6, 2006
- Reanalysis low
- -30°CDec 24, 2010
- Daylight
- 6 h 14 min to 5 h 45 min
- Cloud cover
- 76%
- Humidity
- 98%
- Dew point
- -5°C
- Wind
- 10.4 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 | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | -1°C | -5°C | 6°C 2006 | -18°C 2002 | 53% |
| Dec 2 | -1°C | -5°C | 5°C 2006 | -13°C 2012 | 53% |
| Dec 3 | -1°C | -5°C | 5°C 2000 | -17°C 1997 | 53% |
| Dec 4 | -1°C | -5°C | 5°C 2000 | -18°C 2002 | 52% |
| Dec 5 | -1°C | -5°C | 7°C 2015 | -23°C 2002 | 51% |
| Dec 6 | -1°C | -5°C | 8°C 2006 | -19°C 2002 | 51% |
| Dec 7 | -1°C | -5°C | 6°C 2006 | -19°C 2002 | 49% |
| Dec 8 | -2°C | -6°C | 6°C 2006 | -20°C 2002 | 49% |
| Dec 9 | -2°C | -6°C | 6°C 2006 | -18°C 2005 | 48% |
| Dec 10 | -2°C | -6°C | 6°C 2015 | -17°C 2010 | 48% |
| Dec 11 | -2°C | -6°C | 6°C 2015 | -17°C 2010 | 48% |
| Dec 12 | -2°C | -6°C | 5°C 2006 | -21°C 2010 | 47% |
| Dec 13 | -2°C | -6°C | 4°C 2006 | -22°C 2010 | 47% |
| Dec 14 | -2°C | -6°C | 8°C 2006 | -18°C 2010 | 46% |
| Dec 15 | -2°C | -7°C | 7°C 2006 | -22°C 2010 | 45% |
| Dec 16 | -3°C | -7°C | 3°C 2013 | -22°C 2010 | 44% |
| Dec 17 | -3°C | -7°C | 4°C 2013 | -18°C 2005 | 44% |
| Dec 18 | -3°C | -7°C | 3°C 2015 | -18°C 2010 | 44% |
| Dec 19 | -3°C | -8°C | 3°C 2015 | -19°C 1995 | 44% |
| Dec 20 | -3°C | -8°C | 7°C 2015 | -21°C 2001 | 45% |
| Dec 21 | -3°C | -8°C | 7°C 2015 | -24°C 2001 | 44% |
| Dec 22 | -3°C | -8°C | 4°C 2015 | -28°C 2001 | 45% |
| Dec 23 | -3°C | -8°C | 5°C 2015 | -30°C 2010 | 46% |
| Dec 24 | -4°C | -8°C | 4°C 2006 | -30°C 2010 | 46% |
| Dec 25 | -4°C | -8°C | 5°C 2015 | -29°C 1996 | 46% |
| Dec 26 | -4°C | -8°C | 6°C 2011 | -25°C 1996 | 45% |
| Dec 27 | -4°C | -9°C | 6°C 2011 | -20°C 2001 | 45% |
| Dec 28 | -4°C | -9°C | 4°C 2013 | -21°C 2001 | 45% |
| Dec 29 | -4°C | -9°C | 4°C 2007 | -23°C 2001 | 45% |
| Dec 30 | -4°C | -9°C | 4°C 2007 | -26°C 2002 | 45% |
| Dec 31 | -4°C | -9°C | 4°C 2016 | -23°C 2002 | 46% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- December 1
- sunrise 9:07 AM, sunset 3:21 PM
- December 31
- sunrise 9:36 AM, sunset 3:21 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.