Pasadena Weather in December
Average highs run from 69°F on December 1 to 67°F on December 31, and lows from 46°F to 45°F. Normal precipitation for the month is 3.33 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
- 67°F
- Average low
- 45°F
- Precipitation
- 3.33 in
- Record high
- 78°FDec 3, 1958
- Record low
- 10°FDec 14, 1967
- Chance of a freeze
- 3%
- Daylight
- 10 h 03 min to 9 h 55 min
- Cloud cover
- 43%
- Humidity
- 58%
- Dew point
- 35°F
- Wind
- 7.8 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 | 69°F | 46°F | 76°F 2008 | 23°F 1967 | 16% |
| Dec 2 | 69°F | 46°F | 70°F 2008 | 21°F 1982 | 16% |
| Dec 3 | 69°F | 46°F | 78°F 1958 | 24°F 1948 | 16% |
| Dec 4 | 69°F | 45°F | 76°F 1979 | 21°F 1948 | 17% |
| Dec 5 | 68°F | 45°F | 77°F 2007 | 18°F 1972 | 17% |
| Dec 6 | 68°F | 45°F | 71°F 1958 | 18°F 1978 | 17% |
| Dec 7 | 68°F | 45°F | 73°F 2015 | 13°F 1978 | 17% |
| Dec 8 | 68°F | 45°F | 76°F 2015 | 13°F 1971 | 18% |
| Dec 9 | 68°F | 45°F | 74°F 2015 | 12°F 1972 | 18% |
| Dec 10 | 67°F | 45°F | 77°F 2008 | 18°F 1972 | 18% |
| Dec 11 | 67°F | 45°F | 75°F 1958 | 15°F 1972 | 19% |
| Dec 12 | 67°F | 45°F | 76°F 2010 | 21°F 1949 | 19% |
| Dec 13 | 67°F | 44°F | 75°F 2010 | 11°F 1967 | 19% |
| Dec 14 | 67°F | 44°F | 72°F 2006 | 10°F 1967 | 20% |
| Dec 15 | 67°F | 44°F | 74°F 2013 | 15°F 1967 | 20% |
| Dec 16 | 67°F | 44°F | 76°F 2013 | 22°F 1965 | 20% |
| Dec 17 | 67°F | 44°F | 76°F 2013 | 19°F 1967 | 20% |
| Dec 18 | 67°F | 44°F | 70°F 1958 | 20°F 1970 | 21% |
| Dec 19 | 67°F | 44°F | 69°F 1985 | 18°F 1951 | 21% |
| Dec 20 | 67°F | 44°F | 72°F 2005 | 13°F 1949 | 21% |
| Dec 21 | 67°F | 44°F | 75°F 2005 | 12°F 1990 | 21% |
| Dec 22 | 67°F | 44°F | 76°F 2014 | 10°F 1990 | 21% |
| Dec 23 | 67°F | 44°F | 73°F 2005 | 18°F 1948 | 21% |
| Dec 24 | 67°F | 45°F | 72°F 2005 | 15°F 1987 | 21% |
| Dec 25 | 67°F | 45°F | 71°F 2006 | 14°F 1987 | 22% |
| Dec 26 | 67°F | 45°F | 71°F 1980 | 18°F 1988 | 22% |
| Dec 27 | 67°F | 45°F | 70°F 2013 | 18°F 1988 | 22% |
| Dec 28 | 67°F | 45°F | 76°F 2011 | 20°F 1988 | 22% |
| Dec 29 | 67°F | 45°F | 75°F 2011 | 17°F 1964 | 22% |
| Dec 30 | 67°F | 45°F | 72°F 2008 | 20°F 1965 | 22% |
| Dec 31 | 67°F | 45°F | 72°F 2011 | 15°F 1951 | 22% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:40 AM, sunset 4:43 PM
- December 31
- sunrise 6:58 AM, sunset 4:53 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00046719 (Pasadena), public domain. Records: NOAA GHCN-Daily, station USC00046006, 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.