Winton Weather in December
Average highs run from 58°F on December 1 to 53°F on December 31, and lows from 38°F to 36°F. Normal precipitation for the month is 1.98 in over about 9 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
- 55°F
- Average low
- 36°F
- Precipitation
- 1.98 in
- Record high
- 76°FDec 7, 1912
- Record low
- 15°FDec 24, 1990
- Chance of a freeze
- 92%
- Daylight
- 9 h 47 min to 9 h 38 min
- Cloud cover
- 56%
- Humidity
- 69%
- Dew point
- 37°F
- Wind
- 6.0 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 | 58°F | 38°F | 71°F 2021 | 21°F 1906 | 24% |
| Dec 2 | 58°F | 37°F | 71°F 1959 | 23°F 1906 | 25% |
| Dec 3 | 58°F | 37°F | 72°F 1979 | 26°F 1991 | 25% |
| Dec 4 | 57°F | 37°F | 73°F 1983 | 26°F 2004 | 26% |
| Dec 5 | 57°F | 37°F | 71°F 1995 | 20°F 1903 | 26% |
| Dec 6 | 57°F | 37°F | 75°F 1908 | 20°F 1903 | 27% |
| Dec 7 | 56°F | 37°F | 76°F 1912 | 18°F 1903 | 27% |
| Dec 8 | 56°F | 37°F | 75°F 2005 | 17°F 1903 | 27% |
| Dec 9 | 56°F | 36°F | 73°F 2006 | 16°F 1903 | 28% |
| Dec 10 | 56°F | 36°F | 74°F 1908 | 17°F 1903 | 28% |
| Dec 11 | 55°F | 36°F | 73°F 1908 | 20°F 1903 | 28% |
| Dec 12 | 55°F | 36°F | 72°F 1908 | 17°F 1932 | 29% |
| Dec 13 | 55°F | 36°F | 75°F 1908 | 19°F 1940 | 29% |
| Dec 14 | 55°F | 36°F | 72°F 1912 | 17°F 1940 | 30% |
| Dec 15 | 55°F | 36°F | 70°F 1958 | 18°F 1940 | 30% |
| Dec 16 | 54°F | 36°F | 70°F 1958 | 25°F 1901 | 30% |
| Dec 17 | 54°F | 36°F | 69°F 1958 | 23°F 1975 | 30% |
| Dec 18 | 54°F | 36°F | 68°F 1909 | 23°F 1975 | 30% |
| Dec 19 | 54°F | 36°F | 70°F 1981 | 21°F 2006 | 31% |
| Dec 20 | 54°F | 36°F | 70°F 1969 | 23°F 1930 | 31% |
| Dec 21 | 54°F | 36°F | 68°F 1919 | 22°F 1998 | 31% |
| Dec 22 | 53°F | 36°F | 68°F 1909 | 16°F 1990 | 31% |
| Dec 23 | 53°F | 36°F | 69°F 1964 | 16°F 1990 | 31% |
| Dec 24 | 53°F | 36°F | 67°F 1964 | 15°F 1990 | 31% |
| Dec 25 | 53°F | 36°F | 68°F 1909 | 19°F 1990 | 31% |
| Dec 26 | 53°F | 36°F | 68°F 1909 | 18°F 1956 | 32% |
| Dec 27 | 53°F | 36°F | 67°F 1921 | 21°F 1930 | 32% |
| Dec 28 | 53°F | 36°F | 66°F 1991 | 20°F 1930 | 32% |
| Dec 29 | 53°F | 36°F | 68°F 1909 | 19°F 1990 | 32% |
| Dec 30 | 53°F | 36°F | 68°F 1912 | 20°F 1969 | 32% |
| Dec 31 | 53°F | 36°F | 68°F 1909 | 21°F 1915 | 32% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:58 AM, sunset 4:45 PM
- December 31
- sunrise 7:17 AM, sunset 4:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00045532 (Merced), public domain. Records: NOAA GHCN-Daily, station USC00045532, 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.