Jefferson climate

Jefferson Weather in December

NOAA 1991-2020 normals for Siloam 3N, 25.2 km from Jefferson

Average highs run from 60°F on December 1 to 55°F on December 31, and lows from 37°F to 33°F. Normal precipitation for the month is 4.46 in over about 9 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 Jefferson, in °F, with the record for each date.-20020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
57°F
Average low
35°F
Precipitation
4.46 in
Record high
80°FDec 16, 1971
Record low
-1°FDec 13, 1962
Chance of a freeze
98%
Daylight
10 h 06 min to 9 h 59 min
Cloud cover
58%
Humidity
82%
Dew point
39°F
Wind
5.1 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 160°F37°F78°F 200616°F 196426%0%
Dec 260°F37°F77°F 197023°F 196026%0%
Dec 359°F36°F78°F 198220°F 197926%0%
Dec 459°F36°F76°F 198220°F 197926%0%
Dec 559°F36°F78°F 197722°F 196926%0%
Dec 659°F36°F74°F 196023°F 201027%0%
Dec 758°F36°F77°F 199817°F 197727%0%
Dec 858°F36°F76°F 197817°F 200627%0%
Dec 958°F36°F77°F 200117°F 201027%0%
Dec 1058°F35°F78°F 197217°F 197728%0%
Dec 1158°F35°F79°F 200717°F 199528%
Dec 1257°F35°F79°F 197111°F 196228%
Dec 1357°F35°F79°F 2007-1°F 196228%
Dec 1457°F35°F78°F 200714°F 201028%
Dec 1557°F35°F75°F 197514°F 201029%
Dec 1657°F35°F80°F 197118°F 196829%
Dec 1756°F35°F76°F 198417°F 197229%
Dec 1856°F34°F77°F 198419°F 200029%
Dec 1956°F34°F78°F 196711°F 196329%
Dec 2056°F34°F78°F 196711°F 198129%
Dec 2156°F34°F73°F 197113°F 200029%
Dec 2256°F34°F75°F 197010°F 196030%
Dec 2356°F34°F76°F 197014°F 198930%
Dec 2456°F34°F77°F 196410°F 198930%
Dec 2555°F34°F76°F 19822°F 198330%
Dec 2655°F33°F76°F 20155°F 198330%
Dec 2755°F33°F77°F 201517°F 197730%
Dec 2855°F33°F77°F 197118°F 197730%
Dec 2955°F33°F76°F 198419°F 201030%
Dec 3055°F33°F75°F 198415°F 198330%
Dec 3155°F33°F76°F 197313°F 198330%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Jefferson, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EST).

December 1
sunrise 7:19 AM, sunset 5:25 PM
December 31
sunrise 7:37 AM, sunset 5:36 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00098064 (Siloam 3N), public domain. Records: NOAA GHCN-Daily, station USC00098064, 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.