Rosalia Weather in December
Average highs run from 39°F on December 1 to 35°F on December 31, and lows from 27°F to 24°F. Normal precipitation for the month is 2.66 in over about 12 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
- 36°F
- Average low
- 24°F
- Precipitation
- 2.66 in
- Snowfall
- 10.8 in
- Record high
- 60°FDec 10, 1939
- Record low
- -25°FDec 30, 1968
- Chance of a freeze
- 100%
- Daylight
- 8 h 45 min to 8 h 33 min
- Cloud cover
- 75%
- Humidity
- 90%
- Dew point
- 26°F
- Wind
- 8.5 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 | 39°F | 27°F | 59°F 2021 | -10°F 1985 | 42% | 13% |
| Dec 2 | 39°F | 26°F | 56°F 1927 | 4°F 1919 | 42% | 13% |
| Dec 3 | 38°F | 26°F | 55°F 1918 | -4°F 1919 | 42% | 13% |
| Dec 4 | 38°F | 26°F | 55°F 1946 | 4°F 1919 | 41% | 14% |
| Dec 5 | 38°F | 26°F | 53°F 1900 | 0°F 1919 | 41% | 14% |
| Dec 6 | 38°F | 26°F | 52°F 1946 | -3°F 1978 | 41% | 14% |
| Dec 7 | 37°F | 25°F | 54°F 1938 | -5°F 1972 | 41% | 15% |
| Dec 8 | 37°F | 25°F | 56°F 1938 | -11°F 1972 | 41% | 15% |
| Dec 9 | 37°F | 25°F | 54°F 1957 | -8°F 1919 | 41% | 15% |
| Dec 10 | 37°F | 25°F | 60°F 1939 | -8°F 1972 | 41% | 16% |
| Dec 11 | 36°F | 25°F | 56°F 2014 | -9°F 1922 | 41% | 16% |
| Dec 12 | 36°F | 25°F | 59°F 1921 | -15°F 1919 | 41% | 16% |
| Dec 13 | 36°F | 24°F | 54°F 1924 | -14°F 1919 | 41% | 17% |
| Dec 14 | 36°F | 24°F | 55°F 2002 | -8°F 1922 | 41% | 17% |
| Dec 15 | 36°F | 24°F | 57°F 2025 | -9°F 1922 | 41% | 17% |
| Dec 16 | 36°F | 24°F | 58°F 1941 | -19°F 1964 | 40% | 17% |
| Dec 17 | 35°F | 24°F | 53°F 1917 | -20°F 1964 | 40% | 17% |
| Dec 18 | 35°F | 24°F | 57°F 1917 | -12°F 1984 | 40% | 18% |
| Dec 19 | 35°F | 24°F | 54°F 1936 | -7°F 1924 | 40% | 18% |
| Dec 20 | 35°F | 24°F | 54°F 1933 | -18°F 2008 | 40% | 18% |
| Dec 21 | 35°F | 24°F | 59°F 1933 | -10°F 1983 | 40% | 18% |
| Dec 22 | 35°F | 24°F | 54°F 1933 | -15°F 1983 | 40% | 18% |
| Dec 23 | 35°F | 24°F | 51°F 1919 | -18°F 1983 | 40% | 18% |
| Dec 24 | 35°F | 24°F | 55°F 1919 | -10°F 1983 | 40% | 18% |
| Dec 25 | 35°F | 23°F | 53°F 1980 | -6°F 1964 | 40% | 18% |
| Dec 26 | 35°F | 23°F | 56°F 1980 | -8°F 1916 | 40% | 18% |
| Dec 27 | 35°F | 23°F | 55°F 1980 | -4°F 1983 | 40% | 18% |
| Dec 28 | 35°F | 23°F | 51°F 1897 | -15°F 1968 | 40% | 18% |
| Dec 29 | 35°F | 23°F | 58°F 1917 | -21°F 1968 | 40% | 18% |
| Dec 30 | 35°F | 24°F | 51°F 1920 | -25°F 1968 | 40% | 18% |
| Dec 31 | 35°F | 24°F | 52°F 1917 | -22°F 1978 | 40% | 18% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:16 AM, sunset 4:01 PM
- December 31
- sunrise 7:36 AM, sunset 4:09 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00457180 (Rosalia), public domain. Records: NOAA GHCN-Daily, station USW00024157, 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.