Chisec Weather in December

NASA POWER reanalysis for the half-degree grid cell around Chisec, 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 19°C to 18°C. Normal precipitation for the month is 62 mm over about 12 wet days.

December day by day

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

Normal low
Normal high
Reanalysis extreme high
Reanalysis extreme low

December at a glance

Average high: 27°C
Average low: 18°C
Precipitation: 62 mm
Reanalysis high: 33°CDec 9, 2009
Reanalysis low: 11°CDec 15, 1997
Daylight: 11 h 15 min to 11 h 12 min
Cloud cover: 61%
Humidity: 86%
Dew point: 19°C
Wind: 4.7 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	Reanalysis high	Reanalysis low	Chance wet
Dec 1	27°C	19°C	32°C 1994	14°C 2011	40%
Dec 2	27°C	19°C	33°C 2009	14°C 2011	40%
Dec 3	27°C	19°C	33°C 1994	15°C 1999	42%
Dec 4	27°C	19°C	32°C 1994	16°C 1999	41%
Dec 5	27°C	19°C	32°C 1994	17°C 2000	39%
Dec 6	27°C	19°C	31°C 1994	16°C 2000	39%
Dec 7	27°C	19°C	32°C 1994	14°C 2010	38%
Dec 8	27°C	19°C	33°C 1994	14°C 2003	38%
Dec 9	27°C	19°C	33°C 2009	14°C 2010	36%
Dec 10	27°C	19°C	32°C 1994	12°C 2010	36%
Dec 11	27°C	19°C	31°C 1994	12°C 2017	36%
Dec 12	26°C	19°C	32°C 1994	12°C 2017	36%
Dec 13	26°C	19°C	31°C 1994	12°C 2008	36%
Dec 14	26°C	18°C	32°C 1994	11°C 2010	36%
Dec 15	26°C	18°C	32°C 1994	11°C 1997	36%
Dec 16	26°C	18°C	32°C 1994	13°C 2010	35%
Dec 17	26°C	18°C	32°C 1994	13°C 1997	35%
Dec 18	26°C	18°C	32°C 1994	13°C 1998	34%
Dec 19	26°C	18°C	32°C 1994	14°C 2003	33%
Dec 20	26°C	18°C	33°C 1994	12°C 2003	33%
Dec 21	26°C	18°C	33°C 1994	12°C 2003	32%
Dec 22	26°C	18°C	33°C 1994	13°C 2018	33%
Dec 23	26°C	18°C	31°C 1994	15°C 2003	33%
Dec 24	26°C	18°C	31°C 1997	15°C 2012	34%
Dec 25	27°C	18°C	31°C 2012	15°C 2003	35%
Dec 26	27°C	18°C	31°C 1997	14°C 2020	36%
Dec 27	27°C	18°C	31°C 2018	13°C 2010	37%
Dec 28	27°C	18°C	33°C 2012	11°C 2010	38%
Dec 29	27°C	18°C	31°C 1994	14°C 2004	38%
Dec 30	27°C	18°C	32°C 1994	13°C 1999	38%
Dec 31	27°C	18°C	33°C 2010	12°C 1997	38%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CST).

December 1: sunrise 6:13 AM, sunset 5:28 PM
December 31: sunrise 6:28 AM, sunset 5:40 PM

Every day of December: sun and moon

Other months

Sources

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.