Viljandi Weather in December
Average highs run from -1°C on December 1 to -3°C on December 31, and lows from -5°C to -8°C. Normal precipitation for the month is 56 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
- -2°C
- Average low
- -6°C
- Precipitation
- 56 mm
- Reanalysis high
- 9°CDec 6, 2006
- Reanalysis low
- -30°CDec 15, 1997
- Daylight
- 6 h 53 min to 6 h 29 min
- Cloud cover
- 77%
- Humidity
- 97%
- Dew point
- -4°C
- Wind
- 19.8 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 | 7°C 2006 | -19°C 2002 | 47% |
| Dec 2 | -1°C | -5°C | 6°C 2006 | -17°C 2012 | 47% |
| Dec 3 | -1°C | -5°C | 6°C 2006 | -14°C 2001 | 47% |
| Dec 4 | -1°C | -5°C | 6°C 2015 | -17°C 2001 | 47% |
| Dec 5 | -1°C | -5°C | 8°C 2006 | -18°C 2002 | 47% |
| Dec 6 | -1°C | -5°C | 9°C 2006 | -21°C 2002 | 47% |
| Dec 7 | -1°C | -5°C | 8°C 2015 | -17°C 2002 | 46% |
| Dec 8 | -1°C | -5°C | 6°C 2006 | -17°C 2002 | 46% |
| Dec 9 | -1°C | -5°C | 6°C 2006 | -17°C 2002 | 45% |
| Dec 10 | -1°C | -6°C | 6°C 2006 | -17°C 2012 | 46% |
| Dec 11 | -1°C | -6°C | 6°C 2015 | -15°C 1998 | 46% |
| Dec 12 | -1°C | -6°C | 6°C 2000 | -20°C 2001 | 45% |
| Dec 13 | -1°C | -6°C | 6°C 2000 | -22°C 2001 | 44% |
| Dec 14 | -2°C | -6°C | 7°C 2006 | -23°C 1997 | 44% |
| Dec 15 | -2°C | -6°C | 8°C 2006 | -30°C 1997 | 42% |
| Dec 16 | -2°C | -6°C | 5°C 2006 | -23°C 1997 | 43% |
| Dec 17 | -2°C | -6°C | 4°C 2013 | -22°C 2010 | 44% |
| Dec 18 | -2°C | -7°C | 6°C 2019 | -23°C 2012 | 44% |
| Dec 19 | -2°C | -7°C | 7°C 2015 | -23°C 2009 | 44% |
| Dec 20 | -2°C | -7°C | 8°C 2015 | -18°C 2001 | 44% |
| Dec 21 | -2°C | -7°C | 7°C 2015 | -21°C 1997 | 44% |
| Dec 22 | -2°C | -7°C | 5°C 2015 | -21°C 1997 | 45% |
| Dec 23 | -2°C | -7°C | 8°C 2015 | -23°C 2001 | 46% |
| Dec 24 | -2°C | -7°C | 6°C 2015 | -27°C 2001 | 47% |
| Dec 25 | -3°C | -7°C | 6°C 2015 | -28°C 2001 | 46% |
| Dec 26 | -3°C | -7°C | 6°C 2011 | -24°C 1996 | 45% |
| Dec 27 | -3°C | -7°C | 8°C 2011 | -20°C 1995 | 45% |
| Dec 28 | -3°C | -8°C | 4°C 2013 | -22°C 2002 | 46% |
| Dec 29 | -3°C | -8°C | 4°C 2011 | -19°C 2002 | 45% |
| Dec 30 | -3°C | -8°C | 4°C 2019 | -23°C 1996 | 47% |
| Dec 31 | -3°C | -8°C | 5°C 2016 | -24°C 1996 | 48% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- December 1
- sunrise 8:40 AM, sunset 3:33 PM
- December 31
- sunrise 9:06 AM, sunset 3:35 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.