Iisalmi Weather in December
Average highs run from -4°C on December 1 to -8°C on December 31, and lows from -8°C to -14°C. Normal precipitation for the month is 65 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
- -6°C
- Average low
- -11°C
- Precipitation
- 65 mm
- Reanalysis high
- 6°CDec 10, 2006
- Reanalysis low
- -35°CDec 25, 1995
- Daylight
- 5 h 16 min to 4 h 38 min
- Cloud cover
- 76%
- Humidity
- 99%
- Dew point
- -9°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 | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | -4°C | -8°C | 3°C 2006 | -27°C 2002 | 48% |
| Dec 2 | -4°C | -8°C | 5°C 2006 | -24°C 2002 | 48% |
| Dec 3 | -4°C | -9°C | 2°C 2006 | -27°C 1997 | 48% |
| Dec 4 | -4°C | -9°C | 2°C 2006 | -27°C 1997 | 47% |
| Dec 5 | -4°C | -9°C | 4°C 2006 | -21°C 2005 | 48% |
| Dec 6 | -4°C | -9°C | 5°C 2006 | -23°C 2016 | 48% |
| Dec 7 | -4°C | -9°C | 3°C 2000 | -17°C 2002 | 48% |
| Dec 8 | -4°C | -9°C | 4°C 2006 | -20°C 2005 | 48% |
| Dec 9 | -5°C | -9°C | 5°C 2006 | -22°C 2013 | 47% |
| Dec 10 | -5°C | -9°C | 6°C 2006 | -24°C 2013 | 47% |
| Dec 11 | -5°C | -10°C | 4°C 2006 | -21°C 2010 | 47% |
| Dec 12 | -5°C | -10°C | 4°C 2006 | -24°C 1999 | 47% |
| Dec 13 | -5°C | -10°C | 3°C 2006 | -21°C 2010 | 47% |
| Dec 14 | -5°C | -10°C | 3°C 2006 | -23°C 2010 | 47% |
| Dec 15 | -5°C | -10°C | 3°C 2006 | -24°C 2010 | 46% |
| Dec 16 | -6°C | -11°C | 0°C 1998 | -24°C 1994 | 46% |
| Dec 17 | -6°C | -11°C | 1°C 2013 | -24°C 1994 | 47% |
| Dec 18 | -6°C | -11°C | 0°C 1991 | -24°C 1994 | 46% |
| Dec 19 | -6°C | -12°C | 2°C 2007 | -24°C 2012 | 46% |
| Dec 20 | -7°C | -12°C | 2°C 2015 | -24°C 2012 | 46% |
| Dec 21 | -7°C | -12°C | 4°C 2015 | -27°C 1996 | 46% |
| Dec 22 | -7°C | -13°C | 3°C 2015 | -30°C 2012 | 46% |
| Dec 23 | -7°C | -13°C | 0°C 2013 | -31°C 2012 | 47% |
| Dec 24 | -7°C | -13°C | 0°C 2016 | -34°C 1995 | 47% |
| Dec 25 | -7°C | -13°C | 2°C 2015 | -35°C 1995 | 46% |
| Dec 26 | -7°C | -13°C | 1°C 2013 | -30°C 1996 | 46% |
| Dec 27 | -7°C | -13°C | 2°C 2007 | -32°C 1993 | 46% |
| Dec 28 | -8°C | -13°C | 3°C 2013 | -32°C 1993 | 46% |
| Dec 29 | -8°C | -13°C | 3°C 2007 | -32°C 2002 | 44% |
| Dec 30 | -8°C | -14°C | 3°C 2007 | -29°C 2002 | 45% |
| Dec 31 | -8°C | -14°C | 1°C 2006 | -30°C 2002 | 45% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- December 1
- sunrise 9:22 AM, sunset 2:38 PM
- December 31
- sunrise 9:55 AM, sunset 2:33 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.