Marsing Weather in December
Average highs run from 43°F on December 1 to 39°F on December 31, and lows from 27°F to 23°F. Normal precipitation for the month is 1.11 in over about 9 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 40°F
- Average low
- 24°F
- Precipitation
- 1.11 in
- Snowfall
- 4.2 in
- Record high
- 65°FDec 2, 2012
- Record low
- -26°FDec 22, 1990
- Chance of a freeze
- 100%
- Daylight
- 9 h 11 min to 9 h 01 min
- Cloud cover
- 69%
- Humidity
- 75%
- Dew point
- 24°F
- Wind
- 7.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 43°F | 27°F | 63°F 1995 | 6°F 1979 | 29% | 8% |
| Dec 2 | 43°F | 26°F | 65°F 2012 | 12°F 1983 | 29% | 8% |
| Dec 3 | 43°F | 26°F | 64°F 2012 | 14°F 1976 | 29% | 9% |
| Dec 4 | 42°F | 26°F | 60°F 1978 | 13°F 1992 | 29% | 9% |
| Dec 5 | 42°F | 26°F | 59°F 2007 | 2°F 1992 | 29% | 9% |
| Dec 6 | 42°F | 25°F | 59°F 2012 | 1°F 1992 | 29% | 9% |
| Dec 7 | 42°F | 25°F | 63°F 1987 | 3°F 1992 | 29% | 10% |
| Dec 8 | 41°F | 25°F | 57°F 1981 | 4°F 1978 | 29% | 10% |
| Dec 9 | 41°F | 25°F | 58°F 1993 | -5°F 2009 | 29% | 10% |
| Dec 10 | 41°F | 24°F | 56°F 1981 | -3°F 2009 | 29% | 10% |
| Dec 11 | 41°F | 24°F | 60°F 1996 | -2°F 1985 | 29% | 10% |
| Dec 12 | 40°F | 24°F | 59°F 1993 | 0°F 1985 | 29% | 11% |
| Dec 13 | 40°F | 24°F | 65°F 1995 | -1°F 1985 | 29% | 11% |
| Dec 14 | 40°F | 24°F | 56°F 2002 | -1°F 1985 | 29% | 11% |
| Dec 15 | 40°F | 24°F | 59°F 2002 | -3°F 1985 | 29% | 11% |
| Dec 16 | 40°F | 24°F | 55°F 2002 | -3°F 1985 | 29% | 11% |
| Dec 17 | 40°F | 23°F | 53°F 2002 | -2°F 1985 | 28% | 11% |
| Dec 18 | 39°F | 23°F | 50°F 1982 | 0°F 1985 | 28% | 12% |
| Dec 19 | 39°F | 23°F | 53°F 1999 | -5°F 1984 | 28% | 12% |
| Dec 20 | 39°F | 23°F | 53°F 1989 | -1°F 1984 | 28% | 12% |
| Dec 21 | 39°F | 23°F | 51°F 1979 | -10°F 1990 | 28% | 12% |
| Dec 22 | 39°F | 23°F | 53°F 1989 | -26°F 1990 | 28% | 12% |
| Dec 23 | 39°F | 23°F | 57°F 1989 | -24°F 1990 | 28% | 12% |
| Dec 24 | 39°F | 23°F | 54°F 1989 | -24°F 1990 | 28% | 12% |
| Dec 25 | 39°F | 23°F | 52°F 1989 | -19°F 1990 | 28% | 12% |
| Dec 26 | 39°F | 23°F | 53°F 1980 | -19°F 1990 | 28% | 12% |
| Dec 27 | 39°F | 23°F | 53°F 1980 | -6°F 1985 | 28% | 12% |
| Dec 28 | 39°F | 23°F | 52°F 1996 | -4°F 1988 | 29% | 12% |
| Dec 29 | 39°F | 23°F | 54°F 2011 | -5°F 1985 | 29% | 12% |
| Dec 30 | 39°F | 23°F | 61°F 1996 | -9°F 1990 | 29% | 12% |
| Dec 31 | 39°F | 23°F | 60°F 2011 | -14°F 1990 | 29% | 12% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 8:01 AM, sunset 5:12 PM
- December 31
- sunrise 8:20 AM, sunset 5:21 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00102444 (Deer Flat Dam), public domain. Records: NOAA GHCN-Daily, station USC00106305, 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.