Carson Weather in December
Average highs run from 45°F on December 1 to 41°F on December 31, and lows from 37°F to 34°F. Normal precipitation for the month is 13.45 in over about 22 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
- 42°F
- Average low
- 35°F
- Precipitation
- 13.45 in
- Snowfall
- 2.9 in
- Record high
- 68°FDec 9, 2015
- Record low
- -6°FDec 18, 1924
- Chance of a freeze
- 97%
- Daylight
- 8 h 57 min to 8 h 45 min
- Cloud cover
- 74%
- Humidity
- 94%
- Dew point
- 31°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 | 45°F | 37°F | 65°F 1912 | 12°F 1896 | 71% | 2% |
| Dec 2 | 45°F | 37°F | 65°F 2021 | 8°F 1985 | 71% | 2% |
| Dec 3 | 44°F | 36°F | 61°F 1982 | 11°F 1919 | 71% | 3% |
| Dec 4 | 44°F | 36°F | 66°F 1982 | 12°F 1919 | 71% | 3% |
| Dec 5 | 44°F | 36°F | 65°F 1900 | 8°F 1972 | 71% | 3% |
| Dec 6 | 44°F | 36°F | 63°F 1936 | 8°F 1919 | 71% | 3% |
| Dec 7 | 44°F | 36°F | 59°F 1938 | 14°F 1909 | 71% | 3% |
| Dec 8 | 43°F | 36°F | 60°F 2015 | 9°F 1919 | 72% | 3% |
| Dec 9 | 43°F | 35°F | 68°F 2015 | 2°F 1932 | 72% | 4% |
| Dec 10 | 43°F | 35°F | 59°F 1924 | -1°F 1932 | 72% | 4% |
| Dec 11 | 43°F | 35°F | 60°F 1924 | -2°F 1932 | 72% | 4% |
| Dec 12 | 43°F | 35°F | 60°F 1955 | -2°F 1922 | 72% | 4% |
| Dec 13 | 42°F | 35°F | 60°F 1924 | 2°F 1972 | 72% | 4% |
| Dec 14 | 42°F | 35°F | 60°F 1977 | -5°F 1926 | 72% | 4% |
| Dec 15 | 42°F | 35°F | 60°F 1959 | 5°F 1932 | 72% | 4% |
| Dec 16 | 42°F | 34°F | 62°F 1959 | -1°F 1922 | 72% | 4% |
| Dec 17 | 42°F | 34°F | 57°F 1974 | -3°F 1964 | 72% | 5% |
| Dec 18 | 42°F | 34°F | 63°F 1917 | -6°F 1924 | 72% | 5% |
| Dec 19 | 42°F | 34°F | 56°F 1953 | -3°F 1924 | 72% | 5% |
| Dec 20 | 42°F | 34°F | 58°F 1917 | 3°F 1984 | 72% | 5% |
| Dec 21 | 42°F | 34°F | 61°F 1933 | -3°F 1990 | 72% | 5% |
| Dec 22 | 42°F | 34°F | 62°F 1936 | -3°F 1990 | 72% | 5% |
| Dec 23 | 41°F | 34°F | 62°F 1925 | -2°F 1983 | 72% | 5% |
| Dec 24 | 41°F | 34°F | 56°F 1899 | 1°F 1983 | 72% | 5% |
| Dec 25 | 41°F | 34°F | 55°F 1901 | 6°F 1990 | 72% | 5% |
| Dec 26 | 41°F | 34°F | 60°F 1980 | 9°F 1983 | 72% | 6% |
| Dec 27 | 41°F | 34°F | 59°F 1980 | 10°F 1924 | 72% | 6% |
| Dec 28 | 41°F | 34°F | 58°F 1980 | 6°F 1983 | 72% | 6% |
| Dec 29 | 41°F | 34°F | 66°F 1917 | 3°F 1990 | 72% | 6% |
| Dec 30 | 41°F | 34°F | 62°F 1917 | -1°F 1968 | 72% | 6% |
| Dec 31 | 41°F | 34°F | 59°F 1958 | -2°F 1968 | 71% | 6% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:28 AM, sunset 4:25 PM
- December 31
- sunrise 7:48 AM, sunset 4:33 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00350897 (Bonneville Dam), public domain. Records: NOAA GHCN-Daily, station USC00354003, 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.