Leona Valley climate

Leona Valley Weather in December

NOAA 1991-2020 normals for Fairmont, 16.2 km from Leona Valley

Average highs run from 58°F on December 1 to 55°F on December 31, and lows from 39°F to 37°F. Normal precipitation for the month is 2.21 in over about 5 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 Leona Valley, in °F, with the record for each date.020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
55°F
Average low
37°F
Precipitation
2.21 in
Snowfall
0.4 in
Record high
79°FDec 6, 1977
Record low
2°FDec 24, 1984
Chance of a freeze
98%
Daylight
10 h 00 min to 9 h 53 min
Cloud cover
43%
Humidity
61%
Dew point
30°F
Wind
8.9 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 158°F39°F76°F 202115°F 200414%0%
Dec 258°F38°F75°F 201717°F 200414%0%
Dec 357°F38°F78°F 197717°F 198915%0%
Dec 457°F38°F76°F 197712°F 200615%0%
Dec 557°F38°F76°F 200713°F 200615%0%
Dec 656°F37°F79°F 197716°F 201115%0%
Dec 756°F37°F71°F 197913°F 201115%0%
Dec 856°F37°F72°F 198311°F 197815%0%
Dec 956°F37°F79°F 201512°F 199415%0%
Dec 1056°F37°F74°F 197514°F 201316%0%
Dec 1155°F37°F71°F 197515°F 201316%0%
Dec 1255°F37°F70°F 198811°F 198916%0%
Dec 1355°F36°F75°F 201918°F 198916%0%
Dec 1455°F36°F77°F 197717°F 198917%0%
Dec 1555°F36°F72°F 198118°F 197517%0%
Dec 1655°F36°F75°F 199814°F 197517%0%
Dec 1755°F36°F74°F 198017°F 197517%0%
Dec 1855°F36°F75°F 202516°F 201618%0%
Dec 1954°F36°F78°F 202514°F 201618%0%
Dec 2054°F36°F74°F 202510°F 201618%0%
Dec 2154°F36°F75°F 202510°F 201218%0%
Dec 2254°F36°F76°F 20053°F 199019%0%
Dec 2354°F36°F72°F 20053°F 199019%0%
Dec 2454°F36°F72°F 20052°F 198419%0%
Dec 2555°F36°F73°F 20055°F 199019%0%
Dec 2655°F36°F72°F 198012°F 198419%0%
Dec 2755°F36°F70°F 200513°F 199020%0%
Dec 2855°F36°F74°F 201313°F 199020%0%
Dec 2955°F36°F75°F 202418°F 198820%0%
Dec 3055°F37°F76°F 201114°F 201520%0%
Dec 3155°F37°F72°F 201711°F 199020%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Leona Valley, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PST).

December 1
sunrise 6:42 AM, sunset 4:42 PM
December 31
sunrise 7:00 AM, sunset 4:53 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00042941 (Fairmont), public domain. Records: NOAA GHCN-Daily, station USW00003159, 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.