Mountain Ranch Weather in December
Average highs run from 46°F on December 1 to 44°F on December 31, and lows from 31°F to 30°F. Normal precipitation for the month is 9.65 in over about 11 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
- 30°F
- Precipitation
- 9.65 in
- Snowfall
- 18.7 in
- Record high
- 76°FDec 2, 2021
- Record low
- 19°FDec 16, 2008
- Chance of a freeze
- 100%
- Daylight
- 9 h 42 min to 9 h 33 min
- Cloud cover
- 59%
- Humidity
- 68%
- Dew point
- 34°F
- Wind
- 6.0 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 | 46°F | 31°F | 74°F 1995 | 31°F 2004 | 31% | 10% |
| Dec 2 | 46°F | 31°F | 76°F 2021 | 31°F 2004 | 31% | 10% |
| Dec 3 | 46°F | 31°F | 72°F 2013 | 31°F 2004 | 32% | 10% |
| Dec 4 | 45°F | 30°F | 70°F 2020 | 29°F 2013 | 32% | 11% |
| Dec 5 | 45°F | 30°F | 69°F 2020 | 28°F 2013 | 33% | 11% |
| Dec 6 | 45°F | 30°F | 70°F 2020 | 28°F 2013 | 33% | 11% |
| Dec 7 | 45°F | 30°F | 70°F 2006 | 30°F 2013 | 33% | 12% |
| Dec 8 | 45°F | 30°F | 72°F 2006 | 25°F 2009 | 33% | 12% |
| Dec 9 | 44°F | 30°F | 73°F 2006 | 26°F 2009 | 34% | 12% |
| Dec 10 | 44°F | 30°F | 69°F 2020 | 27°F 2009 | 34% | 13% |
| Dec 11 | 44°F | 30°F | 72°F 1995 | 30°F 2013 | 34% | 13% |
| Dec 12 | 44°F | 30°F | 69°F 2014 | 32°F 1992 | 34% | 13% |
| Dec 13 | 44°F | 29°F | 69°F 2019 | 30°F 1992 | 35% | 13% |
| Dec 14 | 44°F | 29°F | 65°F 2025 | 30°F 1992 | 35% | 14% |
| Dec 15 | 44°F | 29°F | 68°F 2025 | 26°F 2015 | 35% | 14% |
| Dec 16 | 43°F | 29°F | 66°F 2017 | 19°F 2008 | 35% | 14% |
| Dec 17 | 43°F | 29°F | 74°F 2023 | 29°F 2015 | 35% | 14% |
| Dec 18 | 43°F | 29°F | 71°F 2013 | 28°F 2008 | 36% | 14% |
| Dec 19 | 43°F | 29°F | 69°F 2013 | 28°F 1992 | 36% | 14% |
| Dec 20 | 43°F | 29°F | 67°F 2004 | 28°F 1993 | 36% | 15% |
| Dec 21 | 43°F | 29°F | 68°F 2005 | 25°F 1998 | 36% | 15% |
| Dec 22 | 43°F | 29°F | 67°F 1999 | 24°F 1998 | 36% | 15% |
| Dec 23 | 43°F | 29°F | 67°F 1999 | 24°F 1998 | 36% | 15% |
| Dec 24 | 43°F | 30°F | 69°F 2005 | 24°F 1998 | 36% | 15% |
| Dec 25 | 43°F | 30°F | 72°F 2005 | 28°F 1992 | 36% | 15% |
| Dec 26 | 43°F | 30°F | 73°F 2013 | 27°F 1992 | 36% | 15% |
| Dec 27 | 43°F | 30°F | 71°F 2013 | 27°F 1992 | 36% | 15% |
| Dec 28 | 44°F | 30°F | 69°F 1999 | 22°F 1993 | 36% | 15% |
| Dec 29 | 44°F | 30°F | 66°F 1999 | 25°F 1993 | 36% | 15% |
| Dec 30 | 44°F | 30°F | 69°F 2013 | 25°F 1993 | 36% | 15% |
| Dec 31 | 44°F | 30°F | 68°F 2013 | 28°F 2010 | 36% | 16% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:00 AM, sunset 4:42 PM
- December 31
- sunrise 7:19 AM, sunset 4:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00041277 (Calaveras Big Trees), public domain. Records: NOAA GHCN-Daily, station USC00046174, 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.