Mount Vernon climate

Mount Vernon Weather in December

NOAA 1991-2020 normals for Mt Vernon, 0.9 km from Mount Vernon

Average highs run from 61°F on December 1 to 55°F on December 31, and lows from 39°F to 34°F. Normal precipitation for the month is 4.70 in over about 8 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 Mount Vernon, in °F, with the record for each date.-20020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
58°F
Average low
36°F
Precipitation
4.70 in
Snowfall
0.1 in
Record high
88°FDec 4, 2005
Record low
-2°FDec 23, 1989
Chance of a freeze
100%
Daylight
10 h 07 min to 10 h 00 min
Cloud cover
59%
Humidity
81%
Dew point
39°F
Wind
8.5 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 161°F39°F83°F 202217°F 197524%0%
Dec 261°F39°F83°F 198217°F 197524%0%
Dec 361°F39°F84°F 195013°F 192925%0%
Dec 460°F38°F88°F 200515°F 192925%0%
Dec 560°F38°F82°F 193318°F 200625%0%
Dec 660°F38°F82°F 195612°F 195025%0%
Dec 760°F38°F85°F 19397°F 195025%0%
Dec 859°F37°F85°F 19237°F 195025%1%
Dec 959°F37°F83°F 192316°F 192726%1%
Dec 1059°F37°F79°F 201212°F 199526%1%
Dec 1159°F37°F82°F 202115°F 197826%1%
Dec 1258°F37°F82°F 201516°F 195526%1%
Dec 1358°F36°F81°F 193312°F 198926%1%
Dec 1458°F36°F80°F 192114°F 191926%1%
Dec 1558°F36°F81°F 192414°F 195827%1%
Dec 1657°F36°F82°F 19248°F 198927%1%
Dec 1757°F36°F82°F 20217°F 193227%1%
Dec 1857°F36°F78°F 20168°F 193227%1%
Dec 1957°F35°F79°F 19809°F 194527%1%
Dec 2057°F35°F78°F 192111°F 194527%1%
Dec 2156°F35°F79°F 202513°F 199627%1%
Dec 2256°F35°F80°F 19335°F 198327%1%
Dec 2356°F35°F78°F 1931-2°F 198927%1%
Dec 2456°F35°F83°F 2025-2°F 198927%1%
Dec 2556°F35°F84°F 20154°F 198327%1%
Dec 2656°F35°F85°F 19555°F 198327%1%
Dec 2756°F34°F86°F 202515°F 198327%1%
Dec 2855°F34°F83°F 200514°F 192527%1%
Dec 2955°F34°F83°F 202511°F 198327%1%
Dec 3055°F34°F84°F 19513°F 198328%1%
Dec 3155°F34°F84°F 19513°F 198328%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mount Vernon, 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 (CST).

December 1
sunrise 7:06 AM, sunset 5:13 PM
December 31
sunrise 7:24 AM, sunset 5:24 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00416119 (Mt Vernon), public domain. Records: NOAA GHCN-Daily, station USC00416108, 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.