Firestone Weather in December
Average highs run from 47°F on December 1 to 44°F on December 31, and lows from 18°F to 13°F. Normal precipitation for the month is 0.46 in over about 3 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 45°F
- Average low
- 15°F
- Precipitation
- 0.46 in
- Snowfall
- 5.2 in
- Record high
- 82°FDec 23, 2025
- Record low
- -24°FDec 22, 1990
- Chance of a freeze
- 100%
- Daylight
- 9 h 32 min to 9 h 22 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 47°F | 18°F | 75°F 1998 | -7°F 1985 | 12% | 12% |
| Dec 2 | 47°F | 18°F | 73°F 1998 | 1°F 1985 | 12% | 12% |
| Dec 3 | 47°F | 17°F | 77°F 2021 | -2°F 1985 | 12% | 12% |
| Dec 4 | 47°F | 17°F | 69°F 1998 | 3°F 2009 | 12% | 12% |
| Dec 5 | 46°F | 17°F | 77°F 2007 | -5°F 2013 | 12% | 12% |
| Dec 6 | 46°F | 16°F | 71°F 2012 | -5°F 2013 | 11% | 12% |
| Dec 7 | 46°F | 16°F | 74°F 2023 | -7°F 2005 | 11% | 13% |
| Dec 8 | 46°F | 16°F | 74°F 2003 | -8°F 2005 | 11% | 13% |
| Dec 9 | 45°F | 15°F | 69°F 1996 | -11°F 2009 | 11% | 13% |
| Dec 10 | 45°F | 15°F | 68°F 2015 | -10°F 2009 | 11% | 13% |
| Dec 11 | 45°F | 15°F | 69°F 1990 | -6°F 1985 | 11% | 13% |
| Dec 12 | 45°F | 15°F | 69°F 2004 | -5°F 1985 | 11% | 13% |
| Dec 13 | 45°F | 14°F | 71°F 2017 | -2°F 1985 | 11% | 13% |
| Dec 14 | 44°F | 14°F | 67°F 2025 | -2°F 2008 | 11% | 13% |
| Dec 15 | 44°F | 14°F | 73°F 2025 | -17°F 2008 | 10% | 13% |
| Dec 16 | 44°F | 14°F | 73°F 2025 | -16°F 2008 | 10% | 13% |
| Dec 17 | 44°F | 14°F | 70°F 2025 | -1°F 1996 | 10% | 13% |
| Dec 18 | 44°F | 14°F | 72°F 2025 | -10°F 2016 | 10% | 13% |
| Dec 19 | 44°F | 14°F | 68°F 2013 | -7°F 1989 | 10% | 13% |
| Dec 20 | 44°F | 13°F | 74°F 2025 | -17°F 1990 | 10% | 13% |
| Dec 21 | 44°F | 13°F | 71°F 2024 | -22°F 1990 | 10% | 13% |
| Dec 22 | 44°F | 13°F | 69°F 2025 | -24°F 1990 | 10% | 13% |
| Dec 23 | 44°F | 13°F | 82°F 2025 | -16°F 2022 | 10% | 13% |
| Dec 24 | 44°F | 13°F | 67°F 2021 | -15°F 2022 | 10% | 13% |
| Dec 25 | 44°F | 13°F | 75°F 2025 | -3°F 1987 | 10% | 13% |
| Dec 26 | 44°F | 13°F | 75°F 2025 | -1°F 1988 | 10% | 13% |
| Dec 27 | 44°F | 13°F | 68°F 2025 | -2°F 1988 | 10% | 13% |
| Dec 28 | 44°F | 13°F | 67°F 2025 | -2°F 1990 | 10% | 13% |
| Dec 29 | 44°F | 13°F | 68°F 1999 | -10°F 1990 | 10% | 13% |
| Dec 30 | 44°F | 13°F | 66°F 2017 | -10°F 1990 | 10% | 13% |
| Dec 31 | 44°F | 13°F | 69°F 2016 | -17°F 1987 | 10% | 13% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:03 AM, sunset 4:35 PM
- December 31
- sunrise 7:22 AM, sunset 4:44 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00055116 (Longmont 2 Ese), 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.