Gagny Weather in December

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

Average highs run from 29°C on December 1 to 30°C on December 31, and lows from 25°C to 24°C. Normal precipitation for the month is 56 mm over about 16 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: 29°C
Average low: 24°C
Precipitation: 56 mm
Reanalysis high: 33°CDec 31, 2002
Reanalysis low: 20°CDec 27, 2018
Daylight: 11 h 52 min to 11 h 50 min
Cloud cover: 51%
Humidity: 82%
Dew point: 23°C
Wind: 8.6 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	29°C	25°C	30°C 1997	23°C 1992	65%
Dec 2	29°C	25°C	30°C 1992	23°C 1992	63%
Dec 3	29°C	25°C	31°C 2009	24°C 2014	61%
Dec 4	29°C	25°C	30°C 1997	24°C 1996	59%
Dec 5	29°C	25°C	31°C 1997	23°C 2015	59%
Dec 6	29°C	25°C	30°C 1992	23°C 2015	60%
Dec 7	29°C	25°C	31°C 1994	23°C 2015	60%
Dec 8	29°C	25°C	30°C 1994	22°C 2013	61%
Dec 9	29°C	25°C	31°C 1994	22°C 2013	61%
Dec 10	29°C	25°C	30°C 1994	24°C 1994	58%
Dec 11	29°C	25°C	31°C 1994	24°C 1994	56%
Dec 12	29°C	25°C	30°C 1994	23°C 2000	54%
Dec 13	29°C	25°C	30°C 1994	23°C 2000	52%
Dec 14	29°C	25°C	30°C 2002	23°C 2014	50%
Dec 15	29°C	25°C	31°C 1994	23°C 2000	50%
Dec 16	29°C	25°C	31°C 1994	22°C 2015	50%
Dec 17	29°C	25°C	31°C 2002	22°C 2015	50%
Dec 18	29°C	25°C	31°C 1994	23°C 2015	50%
Dec 19	29°C	25°C	32°C 2002	22°C 2015	49%
Dec 20	29°C	24°C	31°C 2019	22°C 2015	46%
Dec 21	29°C	24°C	32°C 1994	23°C 1999	44%
Dec 22	29°C	24°C	30°C 2019	22°C 2015	41%
Dec 23	29°C	24°C	32°C 1994	21°C 2017	38%
Dec 24	30°C	24°C	32°C 2002	22°C 2017	35%
Dec 25	30°C	24°C	32°C 2002	22°C 2018	35%
Dec 26	30°C	24°C	32°C 2002	22°C 2018	35%
Dec 27	30°C	24°C	32°C 2002	20°C 2018	34%
Dec 28	30°C	24°C	32°C 2002	21°C 2014	33%
Dec 29	30°C	24°C	32°C 1994	21°C 2015	31%
Dec 30	30°C	24°C	33°C 2002	21°C 2014	30%
Dec 31	30°C	24°C	33°C 2002	22°C 2014	29%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT).

December 1: sunrise 6:20 AM, sunset 6:12 PM
December 31: sunrise 6:35 AM, sunset 6:25 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.