Livermore Weather in December
Average highs run from 59°F on December 1 to 56°F on December 31, and lows from 40°F to 38°F. Normal precipitation for the month is 2.73 in over about 10 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
- 57°F
- Average low
- 39°F
- Precipitation
- 2.73 in
- Record high
- 79°FDec 12, 1958
- Record low
- 18°FDec 9, 1972
- Chance of a freeze
- 84%
- Daylight
- 9 h 45 min to 9 h 36 min
- Cloud cover
- 52%
- Humidity
- 80%
- Dew point
- 41°F
- Wind
- 6.7 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 | 59°F | 40°F | 75°F 1910 | 27°F 1969 | 28% |
| Dec 2 | 59°F | 40°F | 75°F 1910 | 26°F 1906 | 28% |
| Dec 3 | 59°F | 40°F | 76°F 1958 | 27°F 1936 | 29% |
| Dec 4 | 59°F | 40°F | 74°F 1958 | 23°F 1909 | 29% |
| Dec 5 | 58°F | 40°F | 77°F 1958 | 21°F 1972 | 29% |
| Dec 6 | 58°F | 39°F | 75°F 1958 | 26°F 1904 | 29% |
| Dec 7 | 58°F | 39°F | 73°F 1917 | 26°F 1916 | 30% |
| Dec 8 | 58°F | 39°F | 74°F 2024 | 21°F 1978 | 30% |
| Dec 9 | 58°F | 39°F | 73°F 1917 | 18°F 1972 | 30% |
| Dec 10 | 57°F | 39°F | 72°F 1911 | 20°F 1972 | 30% |
| Dec 11 | 57°F | 39°F | 72°F 1958 | 20°F 1932 | 30% |
| Dec 12 | 57°F | 39°F | 79°F 1958 | 20°F 1972 | 30% |
| Dec 13 | 57°F | 39°F | 73°F 1958 | 24°F 1945 | 31% |
| Dec 14 | 57°F | 39°F | 75°F 1958 | 19°F 1972 | 31% |
| Dec 15 | 57°F | 39°F | 68°F 1941 | 21°F 1932 | 31% |
| Dec 16 | 57°F | 39°F | 72°F 1958 | 25°F 1967 | 31% |
| Dec 17 | 56°F | 39°F | 75°F 1917 | 22°F 1965 | 31% |
| Dec 18 | 56°F | 39°F | 76°F 1958 | 23°F 1965 | 31% |
| Dec 19 | 56°F | 39°F | 70°F 1958 | 23°F 1965 | 31% |
| Dec 20 | 56°F | 38°F | 69°F 1915 | 23°F 1978 | 31% |
| Dec 21 | 56°F | 38°F | 69°F 1915 | 20°F 1968 | 31% |
| Dec 22 | 56°F | 38°F | 71°F 1999 | 18°F 1990 | 31% |
| Dec 23 | 56°F | 38°F | 70°F 1917 | 19°F 1990 | 31% |
| Dec 24 | 56°F | 38°F | 78°F 1946 | 20°F 1963 | 31% |
| Dec 25 | 56°F | 38°F | 67°F 1907 | 21°F 1963 | 31% |
| Dec 26 | 56°F | 38°F | 70°F 1967 | 22°F 1924 | 31% |
| Dec 27 | 56°F | 38°F | 78°F 1917 | 22°F 1962 | 31% |
| Dec 28 | 56°F | 38°F | 73°F 1917 | 23°F 1962 | 31% |
| Dec 29 | 56°F | 38°F | 73°F 1967 | 24°F 1962 | 32% |
| Dec 30 | 56°F | 38°F | 71°F 1945 | 20°F 1978 | 32% |
| Dec 31 | 56°F | 38°F | 69°F 1996 | 20°F 1978 | 32% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:04 AM, sunset 4:49 PM
- December 31
- sunrise 7:22 AM, sunset 4:58 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00044997 (Livermore), public domain. Records: NOAA GHCN-Daily, station USC00044997, 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.