Altamont Weather in December
Average highs run from 52°F on December 1 to 46°F on December 31, and lows from 31°F to 27°F. Normal precipitation for the month is 6.38 in over about 13 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
- 48°F
- Average low
- 29°F
- Precipitation
- 6.38 in
- Snowfall
- 1.1 in
- Record high
- 77°FDec 8, 1956
- Record low
- -10°FDec 13, 1962
- Chance of a freeze
- 100%
- Daylight
- 9 h 56 min to 9 h 48 min
- Cloud cover
- 66%
- Humidity
- 85%
- Dew point
- 34°F
- Wind
- 5.6 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 | 52°F | 31°F | 73°F 1982 | 10°F 1929 | 38% | 1% |
| Dec 2 | 51°F | 31°F | 76°F 1982 | 16°F 1924 | 39% | 1% |
| Dec 3 | 51°F | 31°F | 75°F 1982 | 5°F 1929 | 39% | 2% |
| Dec 4 | 51°F | 30°F | 76°F 1982 | 12°F 1929 | 39% | 2% |
| Dec 5 | 50°F | 30°F | 74°F 2001 | 14°F 1899 | 39% | 2% |
| Dec 6 | 50°F | 30°F | 74°F 1998 | 11°F 1937 | 40% | 2% |
| Dec 7 | 50°F | 30°F | 76°F 1916 | 8°F 1937 | 40% | 2% |
| Dec 8 | 50°F | 30°F | 77°F 1956 | 9°F 2006 | 40% | 2% |
| Dec 9 | 49°F | 30°F | 74°F 2007 | -1°F 1917 | 40% | 2% |
| Dec 10 | 49°F | 30°F | 74°F 2007 | 2°F 1917 | 40% | 2% |
| Dec 11 | 49°F | 29°F | 77°F 2007 | 3°F 1937 | 41% | 2% |
| Dec 12 | 49°F | 29°F | 73°F 1931 | -6°F 1962 | 41% | 2% |
| Dec 13 | 48°F | 29°F | 73°F 1927 | -10°F 1962 | 41% | 2% |
| Dec 14 | 48°F | 29°F | 76°F 1984 | -3°F 1917 | 41% | 2% |
| Dec 15 | 48°F | 29°F | 74°F 1984 | -4°F 1914 | 41% | 2% |
| Dec 16 | 48°F | 29°F | 72°F 1908 | 0°F 1914 | 42% | 2% |
| Dec 17 | 48°F | 29°F | 73°F 1924 | 8°F 1914 | 42% | 2% |
| Dec 18 | 47°F | 28°F | 73°F 1924 | 4°F 1932 | 42% | 2% |
| Dec 19 | 47°F | 28°F | 69°F 1898 | -9°F 1916 | 42% | 2% |
| Dec 20 | 47°F | 28°F | 74°F 1931 | 7°F 1981 | 42% | 2% |
| Dec 21 | 47°F | 28°F | 72°F 1967 | 6°F 1909 | 42% | 2% |
| Dec 22 | 47°F | 28°F | 74°F 2013 | -6°F 1989 | 42% | 2% |
| Dec 23 | 47°F | 28°F | 70°F 1970 | -5°F 1989 | 42% | 2% |
| Dec 24 | 47°F | 28°F | 76°F 2015 | -1°F 1929 | 42% | 3% |
| Dec 25 | 46°F | 28°F | 72°F 1964 | -5°F 1983 | 42% | 3% |
| Dec 26 | 46°F | 27°F | 76°F 2015 | 3°F 1983 | 42% | 3% |
| Dec 27 | 46°F | 27°F | 76°F 2015 | 5°F 1935 | 42% | 3% |
| Dec 28 | 46°F | 27°F | 73°F 1984 | 6°F 1925 | 42% | 3% |
| Dec 29 | 46°F | 27°F | 70°F 2015 | 6°F 1909 | 42% | 3% |
| Dec 30 | 46°F | 27°F | 71°F 1990 | -3°F 1917 | 42% | 3% |
| Dec 31 | 46°F | 27°F | 75°F 1951 | 5°F 1983 | 42% | 3% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 6:34 AM, sunset 4:30 PM
- December 31
- sunrise 6:52 AM, sunset 4:40 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00401887 (Coalmont), public domain. Records: NOAA GHCN-Daily, station USC00405882, 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.