San Pablo Weather in December

NASA POWER reanalysis for the half-degree grid cell around San Pablo, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 23°C on December 1 to 23°C on December 31, and lows from 17°C to 17°C. Normal precipitation for the month is 140 mm over about 19 wet days.

December day by day

The normal high and low for each date, and the record, in °C.

Normal low
Normal high
Record high
Record low

December at a glance

Average high: 23°C
Average low: 17°C
Precipitation: 140 mm
Record high: 33°CDec 29, 1976
Record low: 10°CDec 28, 1976
Daylight: 11 h 35 min to 11 h 33 min
Cloud cover: 74%
Humidity: 90%
Dew point: 18°C
Wind: 5.4 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

Date	Normal high	Normal low	Record high	Record low	Chance wet
Dec 1	23°C	17°C	30°C 2014	15°C 2005	68%
Dec 2	23°C	17°C	30°C 2014	15°C 2005	68%
Dec 3	23°C	17°C	30°C 2014	15°C 1983	68%
Dec 4	23°C	17°C	31°C 2015	16°C 1977	67%
Dec 5	23°C	17°C	31°C 2015	15°C 2016	67%
Dec 6	23°C	17°C	30°C 1979	14°C 1995	67%
Dec 7	23°C	17°C	30°C 2013	15°C 1983	65%
Dec 8	23°C	17°C	30°C 2015	15°C 2012	64%
Dec 9	23°C	17°C	30°C 2015	15°C 2009	62%
Dec 10	23°C	17°C	31°C 2023	15°C 2013	61%
Dec 11	23°C	17°C	32°C 1997	15°C 1988	60%
Dec 12	23°C	17°C	32°C 1979	13°C 1984	59%
Dec 13	23°C	17°C	31°C 2023	12°C 1984	58%
Dec 14	23°C	17°C	30°C 2015	11°C 1988	57%
Dec 15	23°C	17°C	30°C 1979	14°C 2007	57%
Dec 16	23°C	17°C	30°C 1981	15°C 2007	57%
Dec 17	23°C	17°C	31°C 2019	16°C 1977	56%
Dec 18	23°C	17°C	32°C 2015	15°C 2010	55%
Dec 19	23°C	17°C	30°C 2001	15°C 1977	54%
Dec 20	23°C	17°C	30°C 2015	14°C 1978	54%
Dec 21	23°C	17°C	30°C 2019	14°C 1978	53%
Dec 22	23°C	17°C	30°C 2004	14°C 1978	53%
Dec 23	23°C	17°C	31°C 2004	13°C 1978	54%
Dec 24	23°C	17°C	31°C 2015	15°C 1985	55%
Dec 25	23°C	17°C	32°C 2002	15°C 1985	55%
Dec 26	23°C	17°C	31°C 2004	16°C 1978	56%
Dec 27	23°C	17°C	31°C 1997	16°C 1997	55%
Dec 28	23°C	17°C	31°C 1997	10°C 1976	54%
Dec 29	23°C	17°C	33°C 1976	14°C 1976	55%
Dec 30	23°C	17°C	31°C 2015	13°C 1976	56%
Dec 31	23°C	17°C	31°C 2019	15°C 1977	56%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CST).

December 1: sunrise 5:38 AM, sunset 5:13 PM
December 31: sunrise 5:53 AM, sunset 5:26 PM

Every day of December: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station CSM00078762, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: 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.