Shasta Weather in December
Average highs run from 56°F on December 1 to 53°F on December 31, and lows from 40°F to 38°F. Normal precipitation for the month is 11.47 in over about 14 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
- 54°F
- Average low
- 39°F
- Precipitation
- 11.47 in
- Snowfall
- 0.7 in
- Record high
- 83°FDec 1, 2021
- Record low
- 16°FDec 9, 2009
- Chance of a freeze
- 70%
- Daylight
- 9 h 29 min to 9 h 19 min
- Cloud cover
- 61%
- Humidity
- 81%
- Dew point
- 35°F
- Wind
- 4.9 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 | 56°F | 40°F | 83°F 2021 | 24°F 2007 | 43% | 0% |
| Dec 2 | 56°F | 40°F | 74°F 2021 | 26°F 1990 | 43% | 0% |
| Dec 3 | 55°F | 40°F | 70°F 1988 | 27°F 1990 | 43% | 0% |
| Dec 4 | 55°F | 40°F | 72°F 2020 | 28°F 1990 | 44% | 0% |
| Dec 5 | 55°F | 40°F | 73°F 2021 | 24°F 1992 | 44% | 0% |
| Dec 6 | 55°F | 39°F | 75°F 2024 | 20°F 2009 | 44% | 0% |
| Dec 7 | 54°F | 39°F | 72°F 2017 | 27°F 1994 | 44% | 0% |
| Dec 8 | 54°F | 39°F | 76°F 2020 | 18°F 2009 | 44% | 0% |
| Dec 9 | 54°F | 39°F | 73°F 1988 | 16°F 2009 | 44% | 0% |
| Dec 10 | 54°F | 39°F | 73°F 2017 | 19°F 2009 | 44% | 0% |
| Dec 11 | 54°F | 39°F | 70°F 1988 | 26°F 2011 | 45% | 0% |
| Dec 12 | 53°F | 39°F | 70°F 2023 | 24°F 1989 | 45% | 0% |
| Dec 13 | 53°F | 39°F | 74°F 1988 | 25°F 1989 | 45% | 0% |
| Dec 14 | 53°F | 38°F | 76°F 2017 | 24°F 2011 | 44% | 0% |
| Dec 15 | 53°F | 38°F | 72°F 1998 | 26°F 2005 | 44% | 0% |
| Dec 16 | 53°F | 38°F | 78°F 1998 | 24°F 2005 | 44% | 0% |
| Dec 17 | 53°F | 38°F | 71°F 2011 | 26°F 1993 | 44% | 1% |
| Dec 18 | 53°F | 38°F | 67°F 2000 | 23°F 2008 | 44% | 1% |
| Dec 19 | 53°F | 38°F | 69°F 1999 | 24°F 1989 | 44% | 1% |
| Dec 20 | 53°F | 38°F | 73°F 1999 | 22°F 1990 | 44% | 1% |
| Dec 21 | 53°F | 38°F | 72°F 1999 | 17°F 1990 | 44% | 1% |
| Dec 22 | 53°F | 38°F | 73°F 2013 | 20°F 1990 | 44% | 1% |
| Dec 23 | 53°F | 38°F | 72°F 2014 | 20°F 1990 | 44% | 1% |
| Dec 24 | 53°F | 38°F | 71°F 1999 | 22°F 1998 | 44% | 1% |
| Dec 25 | 53°F | 38°F | 72°F 1999 | 25°F 2011 | 43% | 1% |
| Dec 26 | 53°F | 38°F | 70°F 1999 | 23°F 2016 | 43% | 1% |
| Dec 27 | 53°F | 38°F | 70°F 1999 | 23°F 1988 | 43% | 1% |
| Dec 28 | 53°F | 38°F | 70°F 2000 | 20°F 1988 | 44% | 1% |
| Dec 29 | 53°F | 38°F | 73°F 1997 | 22°F 1990 | 44% | 1% |
| Dec 30 | 53°F | 38°F | 71°F 1989 | 18°F 1990 | 44% | 1% |
| Dec 31 | 53°F | 38°F | 69°F 2019 | 18°F 1990 | 44% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:14 AM, sunset 4:43 PM
- December 31
- sunrise 7:34 AM, sunset 4:53 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00049621 (Whiskeytown Rsvr), public domain. Records: NOAA GHCN-Daily, station USW00024257, 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.