Carson climate

Carson Weather in December

NOAA 1991-2020 normals for Bonneville Dam, 14.4 km from Carson

Average highs run from 45°F on December 1 to 41°F on December 31, and lows from 37°F to 34°F. Normal precipitation for the month is 13.45 in over about 22 wet days.

December day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Carson, in °F, with the record for each date.-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
42°F
Average low
35°F
Precipitation
13.45 in
Snowfall
2.9 in
Record high
68°FDec 9, 2015
Record low
-6°FDec 18, 1924
Chance of a freeze
97%
Daylight
8 h 57 min to 8 h 45 min
Cloud cover
74%
Humidity
94%
Dew point
31°F
Wind
5.6 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Dec 145°F37°F65°F 191212°F 189671%2%
Dec 245°F37°F65°F 20218°F 198571%2%
Dec 344°F36°F61°F 198211°F 191971%3%
Dec 444°F36°F66°F 198212°F 191971%3%
Dec 544°F36°F65°F 19008°F 197271%3%
Dec 644°F36°F63°F 19368°F 191971%3%
Dec 744°F36°F59°F 193814°F 190971%3%
Dec 843°F36°F60°F 20159°F 191972%3%
Dec 943°F35°F68°F 20152°F 193272%4%
Dec 1043°F35°F59°F 1924-1°F 193272%4%
Dec 1143°F35°F60°F 1924-2°F 193272%4%
Dec 1243°F35°F60°F 1955-2°F 192272%4%
Dec 1342°F35°F60°F 19242°F 197272%4%
Dec 1442°F35°F60°F 1977-5°F 192672%4%
Dec 1542°F35°F60°F 19595°F 193272%4%
Dec 1642°F34°F62°F 1959-1°F 192272%4%
Dec 1742°F34°F57°F 1974-3°F 196472%5%
Dec 1842°F34°F63°F 1917-6°F 192472%5%
Dec 1942°F34°F56°F 1953-3°F 192472%5%
Dec 2042°F34°F58°F 19173°F 198472%5%
Dec 2142°F34°F61°F 1933-3°F 199072%5%
Dec 2242°F34°F62°F 1936-3°F 199072%5%
Dec 2341°F34°F62°F 1925-2°F 198372%5%
Dec 2441°F34°F56°F 18991°F 198372%5%
Dec 2541°F34°F55°F 19016°F 199072%5%
Dec 2641°F34°F60°F 19809°F 198372%6%
Dec 2741°F34°F59°F 198010°F 192472%6%
Dec 2841°F34°F58°F 19806°F 198372%6%
Dec 2941°F34°F66°F 19173°F 199072%6%
Dec 3041°F34°F62°F 1917-1°F 196872%6%
Dec 3141°F34°F59°F 1958-2°F 196871%6%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Carson, in percent, and of at least 0.1 inch of snowfall.0204060801102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PST).

December 1
sunrise 7:28 AM, sunset 4:25 PM
December 31
sunrise 7:48 AM, sunset 4:33 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00350897 (Bonneville Dam), public domain. Records: NOAA GHCN-Daily, station USC00354003, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.