Mesa County climate

Mesa County Weather in December

NOAA 1991-2020 normals for Grand Junction 6ESE, 2.7 km from Mesa County

Average highs run from 44°F on December 1 to 37°F on December 31, and lows from 24°F to 18°F. Normal precipitation for the month is 0.51 in over about 4 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 Mesa County, in °F, with the record for each date.-40-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
40°F
Average low
20°F
Precipitation
0.51 in
Snowfall
3.5 in
Record high
66°FDec 6, 1901
Record low
-21°FDec 26, 1924
Chance of a freeze
100%
Daylight
9 h 38 min to 9 h 28 min
Cloud cover
58%
Humidity
69%
Dew point
17°F
Wind
6.5 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 144°F24°F64°F 1973-2°F 200413%7%
Dec 244°F24°F60°F 20170°F 200413%7%
Dec 344°F23°F64°F 19800°F 200413%8%
Dec 443°F23°F63°F 1980-8°F 201313%8%
Dec 543°F23°F63°F 1995-11°F 201313%8%
Dec 642°F22°F66°F 1901-9°F 201313%8%
Dec 742°F22°F57°F 19010°F 197813%9%
Dec 841°F22°F55°F 1939-12°F 197813%9%
Dec 941°F21°F56°F 1929-20°F 191913%9%
Dec 1041°F21°F58°F 1939-18°F 191913%10%
Dec 1140°F21°F60°F 1929-12°F 200913%10%
Dec 1240°F20°F61°F 1906-5°F 201313%10%
Dec 1340°F20°F59°F 1933-11°F 191914%10%
Dec 1439°F20°F59°F 2021-15°F 191914%11%
Dec 1539°F20°F54°F 1977-11°F 191914%11%
Dec 1639°F20°F57°F 2016-10°F 191914%11%
Dec 1739°F19°F54°F 1939-6°F 191914%11%
Dec 1838°F19°F53°F 1980-3°F 197114%12%
Dec 1938°F19°F56°F 1921-1°F 191914%12%
Dec 2038°F19°F59°F 1921-6°F 190814%12%
Dec 2138°F19°F61°F 1921-10°F 199014%12%
Dec 2238°F19°F62°F 2025-16°F 199015%12%
Dec 2338°F18°F60°F 1955-17°F 199015%12%
Dec 2438°F18°F64°F 1955-16°F 192415%12%
Dec 2538°F18°F60°F 1971-17°F 192415%12%
Dec 2637°F18°F60°F 1971-21°F 192415%13%
Dec 2737°F18°F58°F 1964-15°F 192415%13%
Dec 2837°F18°F54°F 1955-13°F 190915%13%
Dec 2937°F18°F61°F 1965-13°F 190915%13%
Dec 3037°F18°F58°F 1955-10°F 190915%13%
Dec 3137°F18°F58°F 1980-9°F 201015%13%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mesa County, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

December 1
sunrise 7:14 AM, sunset 4:52 PM
December 31
sunrise 7:33 AM, sunset 5:01 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00053489 (Grand Junction 6ESE), public domain. Records: NOAA GHCN-Daily, station USW00023066, 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.