Colma Weather in December
Average highs run from 61°F on December 1 to 58°F on December 31, and lows from 47°F to 45°F. Normal precipitation for the month is 4.22 in over about 12 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
- 59°F
- Average low
- 46°F
- Precipitation
- 4.22 in
- Record high
- 75°FDec 2, 1958
- Record low
- 24°FDec 9, 1972
- Chance of a freeze
- 10%
- Daylight
- 9 h 45 min to 9 h 36 min
- Cloud cover
- 58%
- Humidity
- 81%
- Dew point
- 46°F
- Wind
- 10.5 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 | 61°F | 47°F | 70°F 1959 | 38°F 1957 | 34% |
| Dec 2 | 61°F | 47°F | 75°F 1958 | 37°F 1967 | 34% |
| Dec 3 | 60°F | 47°F | 73°F 1958 | 38°F 1956 | 35% |
| Dec 4 | 60°F | 47°F | 75°F 1958 | 36°F 2004 | 35% |
| Dec 5 | 60°F | 47°F | 69°F 1979 | 31°F 1972 | 36% |
| Dec 6 | 60°F | 47°F | 67°F 1979 | 37°F 1947 | 36% |
| Dec 7 | 60°F | 47°F | 73°F 2020 | 33°F 1960 | 36% |
| Dec 8 | 60°F | 46°F | 72°F 2020 | 29°F 1978 | 37% |
| Dec 9 | 60°F | 46°F | 67°F 1950 | 24°F 1972 | 37% |
| Dec 10 | 59°F | 46°F | 70°F 1958 | 29°F 1972 | 38% |
| Dec 11 | 59°F | 46°F | 74°F 1958 | 26°F 1972 | 38% |
| Dec 12 | 59°F | 46°F | 75°F 1958 | 29°F 1972 | 38% |
| Dec 13 | 59°F | 46°F | 69°F 1958 | 30°F 1945 | 38% |
| Dec 14 | 59°F | 46°F | 69°F 1958 | 30°F 1972 | 38% |
| Dec 15 | 59°F | 46°F | 71°F 1980 | 31°F 1967 | 38% |
| Dec 16 | 59°F | 46°F | 70°F 1998 | 33°F 1965 | 38% |
| Dec 17 | 59°F | 46°F | 67°F 1958 | 30°F 1965 | 39% |
| Dec 18 | 59°F | 45°F | 65°F 1958 | 30°F 1965 | 39% |
| Dec 19 | 59°F | 45°F | 68°F 1999 | 32°F 1965 | 39% |
| Dec 20 | 59°F | 45°F | 69°F 1999 | 31°F 1965 | 39% |
| Dec 21 | 59°F | 45°F | 68°F 1999 | 28°F 1990 | 38% |
| Dec 22 | 59°F | 45°F | 68°F 1999 | 27°F 1990 | 38% |
| Dec 23 | 59°F | 45°F | 68°F 2014 | 28°F 1990 | 38% |
| Dec 24 | 59°F | 45°F | 65°F 1967 | 29°F 1990 | 38% |
| Dec 25 | 58°F | 45°F | 68°F 1967 | 31°F 1962 | 38% |
| Dec 26 | 58°F | 45°F | 72°F 1967 | 32°F 1954 | 38% |
| Dec 27 | 58°F | 45°F | 70°F 1953 | 33°F 1954 | 38% |
| Dec 28 | 58°F | 45°F | 71°F 1967 | 32°F 1966 | 38% |
| Dec 29 | 58°F | 45°F | 68°F 2013 | 33°F 1962 | 37% |
| Dec 30 | 58°F | 45°F | 69°F 1945 | 33°F 1978 | 37% |
| Dec 31 | 58°F | 45°F | 67°F 1958 | 29°F 1978 | 37% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:06 AM, sunset 4:51 PM
- December 31
- sunrise 7:25 AM, sunset 5:01 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00047767 (San Francisco Oceanside), public domain. Records: NOAA GHCN-Daily, station USW00023234, 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.