Las Rosas Weather in December

NASA POWER reanalysis for the half-degree grid cell around Las Rosas, 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 12°C to 11°C. Normal precipitation for the month is 31 mm over about 6 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: 23°C
Average low: 11°C
Precipitation: 31 mm
Reanalysis high: 29°CDec 18, 2016
Reanalysis low: 4°CDec 15, 2010
Daylight: 11 h 13 min to 11 h 11 min
Cloud cover: 42%
Humidity: 82%
Dew point: 13°C
Wind: 11.2 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	23°C	12°C	27°C 2016	7°C 2011	26%
Dec 2	23°C	12°C	27°C 2016	7°C 1999	27%
Dec 3	23°C	12°C	28°C 2018	7°C 2014	26%
Dec 4	23°C	12°C	27°C 2005	8°C 2000	25%
Dec 5	23°C	12°C	26°C 1995	8°C 1999	23%
Dec 6	23°C	12°C	29°C 2016	9°C 2008	23%
Dec 7	23°C	11°C	27°C 1996	7°C 2010	22%
Dec 8	23°C	11°C	28°C 2016	8°C 2010	21%
Dec 9	23°C	11°C	27°C 1994	8°C 2017	21%
Dec 10	23°C	11°C	26°C 2009	6°C 2010	22%
Dec 11	23°C	11°C	26°C 2012	6°C 2010	23%
Dec 12	23°C	11°C	27°C 2016	6°C 2017	23%
Dec 13	23°C	11°C	26°C 2009	6°C 2008	24%
Dec 14	23°C	11°C	27°C 1994	6°C 1997	24%
Dec 15	23°C	11°C	27°C 1994	4°C 2010	23%
Dec 16	23°C	11°C	27°C 1994	5°C 1997	24%
Dec 17	23°C	11°C	28°C 2016	9°C 1998	23%
Dec 18	23°C	11°C	29°C 2016	7°C 1998	22%
Dec 19	23°C	11°C	26°C 1994	7°C 2010	21%
Dec 20	23°C	11°C	27°C 1994	6°C 2003	21%
Dec 21	23°C	11°C	27°C 1994	6°C 2003	21%
Dec 22	23°C	11°C	27°C 1994	5°C 2018	20%
Dec 23	23°C	11°C	27°C 2018	8°C 2003	21%
Dec 24	23°C	11°C	27°C 2015	8°C 2012	21%
Dec 25	23°C	11°C	26°C 2016	8°C 2003	21%
Dec 26	23°C	11°C	27°C 2016	7°C 2006	21%
Dec 27	23°C	11°C	27°C 2009	5°C 2006	22%
Dec 28	23°C	11°C	28°C 2012	5°C 1999	21%
Dec 29	23°C	11°C	28°C 2018	7°C 1999	20%
Dec 30	23°C	11°C	28°C 2018	6°C 1999	21%
Dec 31	23°C	11°C	28°C 2018	6°C 1999	22%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CST).

December 1: sunrise 6:22 AM, sunset 5:35 PM
December 31: sunrise 6:37 AM, sunset 5:48 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.