Beaverhead County Weather in December
Average highs run from 32°F on December 1 to 27°F on December 31, and lows from 9°F to 6°F. Normal precipitation for the month is 0.71 in over about 10 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
- 28°F
- Average low
- 7°F
- Precipitation
- 0.71 in
- Snowfall
- 4.6 in
- Record high
- 62°FDec 2, 2021
- Record low
- -37°FDec 24, 1983
- Chance of a freeze
- 100%
- Daylight
- 9 h 01 min to 8 h 49 min
- Cloud cover
- 65%
- Humidity
- 91%
- Dew point
- 11°F
- Wind
- 7.2 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 | 32°F | 9°F | 60°F 2021 | -16°F 1985 | 29% | 4% |
| Dec 2 | 31°F | 9°F | 62°F 2021 | -7°F 1985 | 29% | 4% |
| Dec 3 | 31°F | 8°F | 55°F 1940 | -7°F 1972 | 29% | 5% |
| Dec 4 | 31°F | 8°F | 56°F 2021 | -25°F 1972 | 30% | 5% |
| Dec 5 | 30°F | 8°F | 54°F 1987 | -27°F 1972 | 30% | 5% |
| Dec 6 | 30°F | 8°F | 57°F 2023 | -24°F 1972 | 30% | 5% |
| Dec 7 | 30°F | 7°F | 50°F 1975 | -24°F 1972 | 30% | 5% |
| Dec 8 | 29°F | 7°F | 55°F 2020 | -27°F 1972 | 30% | 5% |
| Dec 9 | 29°F | 7°F | 58°F 1957 | -33°F 1972 | 31% | 5% |
| Dec 10 | 29°F | 7°F | 58°F 2025 | -23°F 1972 | 31% | 5% |
| Dec 11 | 29°F | 7°F | 58°F 2025 | -21°F 1961 | 31% | 5% |
| Dec 12 | 28°F | 6°F | 56°F 2025 | -12°F 1961 | 31% | 5% |
| Dec 13 | 28°F | 6°F | 58°F 2025 | -15°F 1963 | 31% | 5% |
| Dec 14 | 28°F | 6°F | 61°F 2025 | -16°F 2008 | 32% | 5% |
| Dec 15 | 28°F | 6°F | 57°F 1980 | -27°F 2008 | 32% | 6% |
| Dec 16 | 28°F | 6°F | 55°F 1962 | -26°F 1964 | 32% | 6% |
| Dec 17 | 28°F | 6°F | 57°F 1980 | -27°F 1964 | 32% | 6% |
| Dec 18 | 28°F | 6°F | 58°F 1979 | -16°F 1983 | 32% | 6% |
| Dec 19 | 28°F | 6°F | 52°F 1979 | -22°F 1990 | 32% | 6% |
| Dec 20 | 27°F | 6°F | 53°F 1942 | -25°F 1990 | 32% | 6% |
| Dec 21 | 27°F | 6°F | 53°F 1969 | -33°F 1983 | 32% | 6% |
| Dec 22 | 27°F | 6°F | 53°F 1955 | -35°F 1983 | 32% | 6% |
| Dec 23 | 27°F | 6°F | 50°F 1964 | -35°F 1983 | 32% | 6% |
| Dec 24 | 27°F | 6°F | 53°F 2025 | -37°F 1983 | 32% | 6% |
| Dec 25 | 27°F | 6°F | 53°F 2025 | -19°F 1983 | 32% | 6% |
| Dec 26 | 27°F | 6°F | 52°F 1989 | -13°F 1941 | 32% | 6% |
| Dec 27 | 27°F | 6°F | 57°F 1980 | -16°F 1941 | 32% | 5% |
| Dec 28 | 27°F | 6°F | 52°F 1945 | -24°F 1978 | 32% | 5% |
| Dec 29 | 27°F | 6°F | 52°F 1980 | -33°F 1990 | 32% | 5% |
| Dec 30 | 27°F | 6°F | 55°F 1980 | -30°F 1978 | 31% | 5% |
| Dec 31 | 27°F | 6°F | 50°F 1980 | -25°F 1978 | 31% | 5% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:50 AM, sunset 4:51 PM
- December 31
- sunrise 8:10 AM, sunset 4:59 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00004137 (Dillon 18 Wsw), public domain. Records: NOAA GHCN-Daily, station USW00024138, 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.