Caldera Weather in December

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

Average highs run from 17°C on December 1 to 18°C on December 31, and lows from 16°C to 17°C. Normal precipitation for the month is 3 mm over about 0 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: 17°C
Average low: 16°C
Precipitation: 3 mm
Reanalysis high: 21°CDec 24, 1997
Reanalysis low: 14°CDec 9, 2001
Daylight: 13 h 43 min to 13 h 49 min
Cloud cover: 43%
Humidity: 86%
Dew point: 15°C
Wind: 16.9 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	17°C	16°C	19°C 2012	14°C 2020	0%
Dec 2	17°C	16°C	19°C 2012	14°C 2020	0%
Dec 3	17°C	16°C	19°C 2012	14°C 2020	0%
Dec 4	17°C	16°C	18°C 1996	14°C 2020	0%
Dec 5	17°C	16°C	18°C 2016	14°C 2020	0%
Dec 6	17°C	16°C	19°C 2012	14°C 2020	0%
Dec 7	17°C	16°C	19°C 2008	14°C 2020	0%
Dec 8	17°C	16°C	19°C 2008	14°C 2001	0%
Dec 9	17°C	16°C	19°C 2016	14°C 2001	0%
Dec 10	17°C	16°C	19°C 2016	14°C 2020	0%
Dec 11	17°C	16°C	19°C 2016	14°C 2001	0%
Dec 12	17°C	16°C	19°C 1997	15°C 2010	0%
Dec 13	17°C	16°C	20°C 1997	14°C 2010	0%
Dec 14	17°C	16°C	20°C 1997	15°C 2010	1%
Dec 15	17°C	16°C	20°C 1997	15°C 2020	1%
Dec 16	17°C	16°C	20°C 2002	15°C 2010	1%
Dec 17	18°C	16°C	20°C 2002	15°C 2020	2%
Dec 18	18°C	16°C	20°C 2002	15°C 2020	2%
Dec 19	18°C	17°C	20°C 1997	15°C 2020	2%
Dec 20	18°C	17°C	20°C 1997	15°C 2010	2%
Dec 21	18°C	17°C	19°C 1997	15°C 1998	2%
Dec 22	18°C	17°C	20°C 1997	15°C 1998	2%
Dec 23	18°C	17°C	20°C 1997	15°C 1998	2%
Dec 24	18°C	17°C	21°C 1997	15°C 1998	2%
Dec 25	18°C	17°C	19°C 1997	16°C 2014	2%
Dec 26	18°C	17°C	20°C 1997	16°C 1998	2%
Dec 27	18°C	17°C	20°C 1997	16°C 2003	2%
Dec 28	18°C	17°C	20°C 1997	16°C 2003	2%
Dec 29	18°C	17°C	20°C 1997	16°C 2003	2%
Dec 30	18°C	17°C	20°C 1997	16°C 2003	2%
Dec 31	18°C	17°C	20°C 1997	16°C 2003	1%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-3).

December 1: sunrise 6:41 AM, sunset 8:24 PM
December 31: sunrise 6:52 AM, sunset 8:41 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.