Jamul Weather in December
Average highs run from 71°F on December 1 to 68°F on December 31, and lows from 43°F to 42°F. Normal precipitation for the month is 1.83 in over about 6 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
- 69°F
- Average low
- 42°F
- Precipitation
- 1.83 in
- Record high
- 93°FDec 4, 1979
- Record low
- 25°FDec 25, 1987
- Chance of a freeze
- 50%
- Daylight
- 10 h 09 min to 10 h 02 min
- Cloud cover
- 41%
- Humidity
- 63%
- Dew point
- 39°F
- Wind
- 8.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 71°F | 43°F | 86°F 1995 | 31°F 1991 | 15% |
| Dec 2 | 71°F | 43°F | 82°F 2015 | 31°F 1991 | 16% |
| Dec 3 | 70°F | 43°F | 82°F 1979 | 31°F 2004 | 16% |
| Dec 4 | 70°F | 43°F | 93°F 1979 | 34°F 2011 | 16% |
| Dec 5 | 70°F | 42°F | 88°F 1979 | 32°F 1983 | 16% |
| Dec 6 | 70°F | 42°F | 87°F 1979 | 30°F 2011 | 17% |
| Dec 7 | 69°F | 42°F | 82°F 1988 | 30°F 2011 | 17% |
| Dec 8 | 69°F | 42°F | 84°F 1981 | 32°F 1989 | 17% |
| Dec 9 | 69°F | 42°F | 85°F 2025 | 29°F 1994 | 17% |
| Dec 10 | 69°F | 42°F | 86°F 2025 | 32°F 1994 | 17% |
| Dec 11 | 69°F | 42°F | 84°F 2017 | 31°F 2001 | 17% |
| Dec 12 | 68°F | 42°F | 90°F 2010 | 30°F 1985 | 18% |
| Dec 13 | 68°F | 42°F | 91°F 2010 | 30°F 1979 | 18% |
| Dec 14 | 68°F | 41°F | 82°F 2004 | 29°F 1987 | 18% |
| Dec 15 | 68°F | 41°F | 85°F 1980 | 28°F 1987 | 18% |
| Dec 16 | 68°F | 41°F | 87°F 1980 | 31°F 1979 | 18% |
| Dec 17 | 68°F | 41°F | 84°F 1999 | 32°F 1984 | 18% |
| Dec 18 | 68°F | 41°F | 84°F 2025 | 32°F 2016 | 18% |
| Dec 19 | 68°F | 41°F | 82°F 1999 | 31°F 2003 | 18% |
| Dec 20 | 68°F | 41°F | 83°F 2004 | 29°F 1992 | 18% |
| Dec 21 | 68°F | 41°F | 85°F 2005 | 30°F 1992 | 18% |
| Dec 22 | 68°F | 41°F | 80°F 2014 | 32°F 1992 | 18% |
| Dec 23 | 68°F | 41°F | 86°F 1989 | 26°F 1990 | 18% |
| Dec 24 | 68°F | 41°F | 84°F 1980 | 30°F 1987 | 18% |
| Dec 25 | 68°F | 41°F | 86°F 2022 | 25°F 1987 | 18% |
| Dec 26 | 68°F | 41°F | 83°F 2022 | 26°F 1987 | 18% |
| Dec 27 | 68°F | 42°F | 84°F 2013 | 29°F 1987 | 18% |
| Dec 28 | 68°F | 42°F | 86°F 2017 | 29°F 1987 | 18% |
| Dec 29 | 68°F | 42°F | 88°F 1980 | 31°F 1988 | 18% |
| Dec 30 | 68°F | 42°F | 88°F 1980 | 28°F 1988 | 18% |
| Dec 31 | 68°F | 42°F | 83°F 1980 | 31°F 1990 | 18% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:32 AM, sunset 4:41 PM
- December 31
- sunrise 6:50 AM, sunset 4:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00042706 (El Cajon), public domain. Records: NOAA GHCN-Daily, station USC00042706, 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.