Sheridan Weather in December
Average highs run from 40°F on December 1 to 36°F on December 31, and lows from 15°F to 11°F. Normal precipitation for the month is 0.54 in over about 7 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
- 37°F
- Average low
- 12°F
- Precipitation
- 0.54 in
- Snowfall
- 5.2 in
- Record high
- 77°FDec 2, 2021
- Record low
- -37°FDec 24, 1983
- Chance of a freeze
- 100%
- Daylight
- 9 h 03 min to 8 h 52 min
- Cloud cover
- 68%
- Humidity
- 66%
- Dew point
- 18°F
- Wind
- 10.7 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 | 40°F | 15°F | 76°F 2021 | -21°F 1985 | 24% | 6% |
| Dec 2 | 40°F | 15°F | 77°F 2021 | -21°F 1985 | 24% | 6% |
| Dec 3 | 39°F | 15°F | 65°F 1975 | -9°F 1978 | 24% | 7% |
| Dec 4 | 39°F | 14°F | 70°F 1965 | -28°F 1972 | 24% | 7% |
| Dec 5 | 39°F | 14°F | 64°F 2023 | -30°F 1972 | 23% | 7% |
| Dec 6 | 38°F | 14°F | 72°F 1981 | -28°F 1972 | 23% | 7% |
| Dec 7 | 38°F | 13°F | 67°F 2020 | -28°F 2013 | 23% | 7% |
| Dec 8 | 38°F | 13°F | 72°F 2020 | -30°F 1972 | 23% | 7% |
| Dec 9 | 37°F | 13°F | 69°F 1957 | -29°F 1972 | 23% | 7% |
| Dec 10 | 37°F | 13°F | 70°F 1981 | -18°F 1972 | 23% | 7% |
| Dec 11 | 37°F | 13°F | 66°F 2004 | -20°F 1972 | 23% | 8% |
| Dec 12 | 37°F | 12°F | 70°F 2017 | -15°F 2000 | 23% | 8% |
| Dec 13 | 37°F | 12°F | 60°F 1960 | -10°F 2008 | 23% | 8% |
| Dec 14 | 36°F | 12°F | 62°F 1952 | -16°F 2008 | 23% | 8% |
| Dec 15 | 36°F | 12°F | 63°F 2006 | -19°F 1964 | 23% | 8% |
| Dec 16 | 36°F | 12°F | 63°F 2023 | -24°F 1964 | 23% | 8% |
| Dec 17 | 36°F | 12°F | 68°F 1980 | -29°F 1964 | 23% | 9% |
| Dec 18 | 36°F | 12°F | 68°F 1988 | -24°F 1983 | 23% | 9% |
| Dec 19 | 36°F | 11°F | 62°F 2004 | -21°F 1990 | 23% | 9% |
| Dec 20 | 36°F | 11°F | 62°F 2024 | -25°F 1990 | 23% | 9% |
| Dec 21 | 36°F | 11°F | 62°F 1994 | -35°F 1989 | 23% | 9% |
| Dec 22 | 36°F | 11°F | 66°F 1955 | -35°F 1989 | 23% | 9% |
| Dec 23 | 36°F | 11°F | 60°F 1955 | -28°F 1983 | 23% | 9% |
| Dec 24 | 36°F | 11°F | 60°F 2025 | -37°F 1983 | 23% | 9% |
| Dec 25 | 36°F | 11°F | 68°F 2025 | -32°F 1983 | 23% | 9% |
| Dec 26 | 36°F | 11°F | 67°F 1980 | -29°F 1996 | 23% | 9% |
| Dec 27 | 36°F | 11°F | 66°F 1980 | -10°F 1971 | 23% | 10% |
| Dec 28 | 36°F | 11°F | 60°F 1965 | -22°F 1990 | 23% | 10% |
| Dec 29 | 36°F | 11°F | 65°F 1956 | -30°F 1990 | 24% | 10% |
| Dec 30 | 36°F | 11°F | 55°F 1956 | -30°F 1990 | 24% | 10% |
| Dec 31 | 36°F | 11°F | 56°F 1996 | -29°F 1978 | 24% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:25 AM, sunset 4:28 PM
- December 31
- sunrise 7:45 AM, sunset 4:37 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024029 (Sheridan CO AP), public domain. Records: NOAA GHCN-Daily, station USW00024029, 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.