Tracy Weather in December
Average highs run from 60°F on December 1 to 55°F on December 31, and lows from 38°F to 36°F. Normal precipitation for the month is 2.32 in.
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
- 56°F
- Average low
- 36°F
- Precipitation
- 2.32 in
- Record high
- 73°FDec 1, 1995
- Record low
- 17°FDec 24, 1998
- Chance of a freeze
- 95%
- Daylight
- 9 h 45 min to 9 h 36 min
- Cloud cover
- 52%
- Humidity
- 76%
- Dew point
- 38°F
- Wind
- 6.5 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 | 60°F | 38°F | 73°F 1995 | 27°F 2015 | |
| Dec 2 | 59°F | 38°F | 70°F 2021 | 26°F 2022 | |
| Dec 3 | 59°F | 37°F | 69°F 1977 | 27°F 1957 | |
| Dec 4 | 59°F | 37°F | 73°F 1996 | 27°F 1988 | |
| Dec 5 | 58°F | 37°F | 69°F 1958 | 26°F 2013 | |
| Dec 6 | 58°F | 37°F | 71°F 1986 | 23°F 2013 | |
| Dec 7 | 58°F | 37°F | 70°F 1986 | 25°F 2009 | |
| Dec 8 | 57°F | 37°F | 72°F 1986 | 26°F 1960 | |
| Dec 9 | 57°F | 37°F | 71°F 2020 | 21°F 1972 | |
| Dec 10 | 57°F | 37°F | 67°F 1992 | 22°F 2009 | |
| Dec 11 | 57°F | 37°F | 69°F 2020 | 25°F 1972 | |
| Dec 12 | 56°F | 37°F | 70°F 1958 | 22°F 1972 | |
| Dec 13 | 56°F | 36°F | 70°F 1958 | 23°F 1972 | |
| Dec 14 | 56°F | 36°F | 69°F 1969 | 27°F 1967 | |
| Dec 15 | 56°F | 36°F | 66°F 1998 | 26°F 1980 | |
| Dec 16 | 56°F | 36°F | 66°F 1998 | 24°F 1978 | |
| Dec 17 | 56°F | 36°F | 68°F 1958 | 24°F 1967 | |
| Dec 18 | 55°F | 36°F | 65°F 1958 | 24°F 1965 | |
| Dec 19 | 55°F | 36°F | 66°F 1998 | 22°F 2016 | |
| Dec 20 | 55°F | 36°F | 69°F 1981 | 20°F 2012 | |
| Dec 21 | 55°F | 36°F | 66°F 1969 | 20°F 1990 | |
| Dec 22 | 55°F | 36°F | 68°F 2014 | 18°F 1990 | |
| Dec 23 | 55°F | 36°F | 71°F 1996 | 18°F 1998 | |
| Dec 24 | 55°F | 36°F | 65°F 1964 | 17°F 1998 | |
| Dec 25 | 55°F | 36°F | 70°F 1964 | 22°F 1990 | |
| Dec 26 | 55°F | 36°F | 65°F 1964 | 26°F 1990 | |
| Dec 27 | 55°F | 36°F | 67°F 1967 | 24°F 1990 | |
| Dec 28 | 55°F | 36°F | 68°F 1953 | 24°F 1998 | |
| Dec 29 | 55°F | 36°F | 67°F 1967 | 23°F 1962 | |
| Dec 30 | 55°F | 36°F | 67°F 2024 | 22°F 1978 | |
| Dec 31 | 55°F | 36°F | 68°F 1995 | 17°F 1978 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:02 AM, sunset 4:47 PM
- December 31
- sunrise 7:21 AM, sunset 4:57 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00048999 (Tracy Carbona), public domain. Records: NOAA GHCN-Daily, station USC00048999, 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.