San Antonio de Los Altos Weather in December

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

Average highs run from 27°C on December 1 to 27°C on December 31, and lows from 21°C to 20°C. Normal precipitation for the month is 68 mm over about 12 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: 27°C
Average low: 21°C
Precipitation: 68 mm
Record high: 36°CDec 30, 2013
Record low: 15°CDec 2, 1997
Daylight: 11 h 34 min to 11 h 32 min
Cloud cover: 52%
Humidity: 83%
Dew point: 20°C
Wind: 10.4 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	27°C	21°C	33°C 1979	20°C 1983	53%
Dec 2	27°C	21°C	35°C 2015	15°C 1997	54%
Dec 3	27°C	21°C	32°C 1979	18°C 1993	53%
Dec 4	27°C	21°C	32°C 1987	20°C 1995	52%
Dec 5	27°C	21°C	33°C 1979	20°C 1973	51%
Dec 6	27°C	21°C	32°C 1992	21°C 1973	49%
Dec 7	27°C	21°C	33°C 1987	20°C 1992	48%
Dec 8	27°C	21°C	32°C 1981	21°C 2002	47%
Dec 9	27°C	21°C	34°C 1987	19°C 2005	46%
Dec 10	27°C	21°C	32°C 1992	18°C 1992	46%
Dec 11	27°C	21°C	32°C 2001	21°C 1991	44%
Dec 12	27°C	21°C	33°C 1987	18°C 1992	43%
Dec 13	27°C	21°C	33°C 1987	20°C 1977	41%
Dec 14	27°C	21°C	32°C 2007	20°C 1974	38%
Dec 15	27°C	21°C	32°C 1992	18°C 1993	36%
Dec 16	27°C	21°C	32°C 2010	21°C 1974	35%
Dec 17	27°C	21°C	33°C 1992	20°C 1976	33%
Dec 18	27°C	21°C	34°C 2002	20°C 1988	33%
Dec 19	27°C	21°C	31°C 1981	20°C 1974	34%
Dec 20	27°C	21°C	32°C 2002	21°C 1993	35%
Dec 21	27°C	21°C	34°C 1995	19°C 1993	35%
Dec 22	27°C	21°C	33°C 1995	20°C 1973	35%
Dec 23	27°C	21°C	32°C 1995	20°C 1973	35%
Dec 24	27°C	21°C	33°C 1995	16°C 1993	35%
Dec 25	27°C	21°C	33°C 2004	16°C 1993	34%
Dec 26	27°C	20°C	33°C 2002	21°C 1993	34%
Dec 27	27°C	20°C	32°C 2002	20°C 1983	34%
Dec 28	27°C	20°C	32°C 1995	18°C 1993	33%
Dec 29	27°C	20°C	31°C 1997	18°C 1992	33%
Dec 30	27°C	20°C	36°C 2013	20°C 1993	32%
Dec 31	27°C	20°C	32°C 2002	20°C 1988	31%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-4).

December 1: sunrise 6:30 AM, sunset 6:04 PM
December 31: sunrise 6:45 AM, sunset 6:17 PM

Every day of December: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station VEM00080415, 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.