Derby climate

Derby Weather in December

NOAA 1991-2020 normals for Denver-Stapleton, 9.4 km from Derby

Average highs run from 49°F on December 1 to 46°F on December 31, and lows from 20°F to 17°F. Normal precipitation for the month is 0.47 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 Derby, in °F, with the record for each date.-250255075100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
46°F
Average low
18°F
Precipitation
0.47 in
Snowfall
6.6 in
Record high
82°FDec 23, 2025
Record low
-24°FDec 22, 1990
Chance of a freeze
100%
Daylight
9 h 33 min to 9 h 24 min
Cloud cover
63%
Humidity
57%
Dew point
16°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 149°F20°F75°F 1998-7°F 198517%16%
Dec 248°F20°F73°F 19981°F 198517%16%
Dec 348°F20°F77°F 2021-2°F 198517%16%
Dec 448°F20°F69°F 19983°F 200917%16%
Dec 547°F19°F77°F 2007-5°F 201317%16%
Dec 647°F19°F71°F 2012-5°F 201317%16%
Dec 747°F19°F74°F 2023-7°F 200517%16%
Dec 846°F19°F74°F 2003-8°F 200517%16%
Dec 946°F18°F69°F 1996-11°F 200917%16%
Dec 1046°F18°F68°F 2015-10°F 200916%16%
Dec 1146°F18°F69°F 1990-6°F 198516%16%
Dec 1246°F18°F69°F 2004-5°F 198516%16%
Dec 1346°F18°F71°F 2017-2°F 198516%16%
Dec 1445°F17°F67°F 2025-2°F 200816%16%
Dec 1545°F17°F73°F 2025-17°F 200816%16%
Dec 1645°F17°F73°F 2025-16°F 200816%16%
Dec 1745°F17°F70°F 2025-1°F 199616%16%
Dec 1845°F17°F72°F 2025-10°F 201616%16%
Dec 1945°F17°F68°F 2013-7°F 198916%16%
Dec 2045°F17°F74°F 2025-17°F 199016%16%
Dec 2145°F17°F71°F 2024-22°F 199016%16%
Dec 2245°F17°F69°F 2025-24°F 199016%16%
Dec 2345°F17°F82°F 2025-16°F 202216%15%
Dec 2445°F17°F67°F 2021-15°F 202216%15%
Dec 2545°F17°F75°F 2025-3°F 198716%15%
Dec 2645°F17°F75°F 2025-1°F 198816%15%
Dec 2745°F17°F68°F 2025-2°F 198815%15%
Dec 2845°F17°F67°F 2025-2°F 199015%15%
Dec 2946°F17°F68°F 1999-10°F 199015%15%
Dec 3046°F17°F66°F 2017-10°F 199015%15%
Dec 3146°F17°F69°F 2016-17°F 198715%15%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Derby, 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 7:02 AM, sunset 4:35 PM
December 31
sunrise 7:21 AM, sunset 4:45 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00023062 (Denver-Stapleton), public domain. Records: NOAA GHCN-Daily, station USC00055984, 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.