Mossyrock Weather in December
Average highs run from 47°F on December 1 to 44°F on December 31, and lows from 35°F to 33°F. Normal precipitation for the month is 8.13 in over about 20 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
- 44°F
- Average low
- 34°F
- Precipitation
- 8.13 in
- Snowfall
- 1.0 in
- Record high
- 73°FDec 13, 1913
- Record low
- 0°FDec 31, 1978
- Chance of a freeze
- 100%
- Daylight
- 8 h 51 min to 8 h 38 min
- Cloud cover
- 76%
- Humidity
- 94%
- Dew point
- 33°F
- Wind
- 5.4 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 | 47°F | 35°F | 69°F 1926 | 11°F 1985 | 64% | 1% |
| Dec 2 | 46°F | 35°F | 60°F 1926 | 18°F 1919 | 64% | 1% |
| Dec 3 | 46°F | 35°F | 69°F 1913 | 14°F 1919 | 64% | 1% |
| Dec 4 | 46°F | 35°F | 68°F 1939 | 19°F 1909 | 64% | 1% |
| Dec 5 | 46°F | 35°F | 63°F 1987 | 15°F 2013 | 64% | 1% |
| Dec 6 | 46°F | 34°F | 59°F 1965 | 15°F 1956 | 64% | 1% |
| Dec 7 | 45°F | 34°F | 67°F 1913 | 6°F 1972 | 64% | 1% |
| Dec 8 | 45°F | 34°F | 61°F 1957 | 1°F 1972 | 64% | 1% |
| Dec 9 | 45°F | 34°F | 66°F 1913 | 7°F 1932 | 64% | 2% |
| Dec 10 | 45°F | 34°F | 65°F 1993 | 5°F 1972 | 64% | 2% |
| Dec 11 | 45°F | 34°F | 62°F 1933 | 5°F 1932 | 64% | 2% |
| Dec 12 | 45°F | 34°F | 68°F 1952 | 11°F 1932 | 64% | 2% |
| Dec 13 | 44°F | 34°F | 73°F 1913 | 7°F 1919 | 64% | 2% |
| Dec 14 | 44°F | 34°F | 58°F 2002 | 4°F 1919 | 64% | 2% |
| Dec 15 | 44°F | 33°F | 66°F 1913 | 11°F 1919 | 64% | 2% |
| Dec 16 | 44°F | 33°F | 57°F 1974 | 11°F 1964 | 64% | 2% |
| Dec 17 | 44°F | 33°F | 59°F 1919 | 7°F 1964 | 64% | 2% |
| Dec 18 | 44°F | 33°F | 58°F 1917 | 5°F 1924 | 64% | 2% |
| Dec 19 | 44°F | 33°F | 59°F 1950 | 6°F 1924 | 64% | 2% |
| Dec 20 | 44°F | 33°F | 58°F 1919 | 8°F 1990 | 64% | 2% |
| Dec 21 | 44°F | 33°F | 60°F 1919 | 2°F 1990 | 64% | 2% |
| Dec 22 | 44°F | 33°F | 62°F 1940 | 4°F 1924 | 64% | 2% |
| Dec 23 | 44°F | 33°F | 63°F 1950 | 2°F 1983 | 64% | 2% |
| Dec 24 | 44°F | 33°F | 64°F 1913 | 4°F 1924 | 64% | 2% |
| Dec 25 | 44°F | 33°F | 59°F 1980 | 8°F 1924 | 64% | 2% |
| Dec 26 | 44°F | 33°F | 60°F 1980 | 10°F 1924 | 64% | 2% |
| Dec 27 | 44°F | 33°F | 60°F 1980 | 16°F 1948 | 64% | 2% |
| Dec 28 | 44°F | 33°F | 60°F 1917 | 17°F 1968 | 64% | 2% |
| Dec 29 | 44°F | 33°F | 60°F 1913 | 8°F 1990 | 64% | 2% |
| Dec 30 | 44°F | 33°F | 61°F 1902 | 10°F 1978 | 64% | 2% |
| Dec 31 | 44°F | 33°F | 59°F 1917 | 0°F 1978 | 64% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:33 AM, sunset 4:24 PM
- December 31
- sunrise 7:54 AM, sunset 4:32 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00455110 (Mayfield Pwr Plt), public domain. Records: NOAA GHCN-Daily, station USC00451276, 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.