Fortezza Weather in December
Average highs run from -1°C on December 1 to -4°C on December 31, and lows from -9°C to -13°C. Normal precipitation for the month is 58 mm over about 13 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
- -3°C
- Average low
- -11°C
- Precipitation
- 58 mm
- Record high
- 12°CDec 11, 1984
- Record low
- -21°CDec 21, 1988
- Daylight
- 8 h 49 min to 8 h 36 min
- Cloud cover
- 70%
- Humidity
- 91%
- Dew point
- -9°C
- Wind
- 6.5 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 | -1°C | -9°C | 10°C 2015 | -13°C 1978 | 40% |
| Dec 2 | -2°C | -9°C | 10°C 2016 | -16°C 1973 | 40% |
| Dec 3 | -2°C | -10°C | 6°C 2000 | -14°C 1978 | 40% |
| Dec 4 | -2°C | -10°C | 8°C 2011 | -15°C 2023 | 40% |
| Dec 5 | -2°C | -10°C | 7°C 2006 | -13°C 2010 | 41% |
| Dec 6 | -2°C | -10°C | 8°C 2006 | -15°C 1978 | 41% |
| Dec 7 | -2°C | -10°C | 6°C 2006 | -18°C 1990 | 41% |
| Dec 8 | -3°C | -11°C | 7°C 2000 | -15°C 1980 | 40% |
| Dec 9 | -3°C | -11°C | 8°C 2000 | -17°C 1980 | 41% |
| Dec 10 | -3°C | -11°C | 7°C 2016 | -18°C 1991 | 40% |
| Dec 11 | -3°C | -11°C | 12°C 1984 | -14°C 1987 | 40% |
| Dec 12 | -3°C | -11°C | 6°C 2016 | -16°C 1991 | 39% |
| Dec 13 | -3°C | -11°C | 4°C 2014 | -20°C 2022 | 40% |
| Dec 14 | -3°C | -12°C | 5°C 2014 | -14°C 2001 | 41% |
| Dec 15 | -3°C | -12°C | 6°C 2014 | -14°C 1976 | 41% |
| Dec 16 | -3°C | -12°C | 5°C 2014 | -15°C 1976 | 41% |
| Dec 17 | -3°C | -12°C | 11°C 1985 | -19°C 1988 | 40% |
| Dec 18 | -3°C | -12°C | 11°C 2012 | -13°C 1999 | 42% |
| Dec 19 | -3°C | -12°C | 8°C 1989 | -17°C 2010 | 41% |
| Dec 20 | -4°C | -12°C | 7°C 1987 | -16°C 1975 | 40% |
| Dec 21 | -4°C | -12°C | 6°C 1987 | -21°C 1988 | 40% |
| Dec 22 | -4°C | -12°C | 6°C 2013 | -15°C 1986 | 40% |
| Dec 23 | -4°C | -12°C | 7°C 2014 | -15°C 2000 | 41% |
| Dec 24 | -4°C | -12°C | 5°C 2013 | -20°C 2003 | 41% |
| Dec 25 | -4°C | -12°C | 11°C 2016 | -19°C 2003 | 40% |
| Dec 26 | -4°C | -12°C | 8°C 2016 | -19°C 1986 | 42% |
| Dec 27 | -4°C | -12°C | 7°C 1975 | -17°C 1981 | 43% |
| Dec 28 | -4°C | -13°C | 6°C 2015 | -14°C 1984 | 44% |
| Dec 29 | -4°C | -13°C | 6°C 1986 | -15°C 1991 | 44% |
| Dec 30 | -4°C | -13°C | 7°C 2022 | -15°C 2004 | 42% |
| Dec 31 | -4°C | -13°C | 8°C 2022 | -19°C 1999 | 42% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- December 1
- sunrise 7:38 AM, sunset 4:27 PM
- December 31
- sunrise 7:59 AM, sunset 4:35 PM
Other months
Sources
Records: NOAA GHCN-Daily, station ITM00016033, every year on file, quality-flagged values removed. 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 2026-09-27. Sun and moon: computed with the NOAA solar equations and Meeus.