Flathead County Weather in December
Average highs run from 33°F on December 1 to 30°F on December 31, and lows from 24°F to 20°F. Normal precipitation for the month is 3.66 in over about 15 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
- 31°F
- Average low
- 21°F
- Precipitation
- 3.66 in
- Snowfall
- 13.4 in
- Record high
- 62°FDec 1, 2021
- Record low
- -35°FDec 29, 1990
- Chance of a freeze
- 100%
- Daylight
- 8 h 38 min to 8 h 25 min
- Cloud cover
- 69%
- Humidity
- 98%
- Dew point
- 13°F
- Wind
- 6.0 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 | 33°F | 24°F | 62°F 2021 | -18°F 1985 | 49% | 18% |
| Dec 2 | 33°F | 24°F | 59°F 2021 | -12°F 1985 | 49% | 18% |
| Dec 3 | 32°F | 23°F | 52°F 1941 | -9°F 1984 | 49% | 19% |
| Dec 4 | 32°F | 23°F | 58°F 1918 | -11°F 1897 | 49% | 19% |
| Dec 5 | 32°F | 23°F | 49°F 1940 | -8°F 1972 | 50% | 20% |
| Dec 6 | 32°F | 23°F | 52°F 1939 | -16°F 2005 | 50% | 20% |
| Dec 7 | 32°F | 22°F | 47°F 1918 | -19°F 2005 | 50% | 21% |
| Dec 8 | 31°F | 22°F | 56°F 1897 | -20°F 1972 | 50% | 22% |
| Dec 9 | 31°F | 22°F | 57°F 1979 | -24°F 1919 | 50% | 22% |
| Dec 10 | 31°F | 22°F | 50°F 2025 | -14°F 1961 | 50% | 23% |
| Dec 11 | 31°F | 22°F | 55°F 1924 | -15°F 1932 | 50% | 23% |
| Dec 12 | 31°F | 21°F | 57°F 1921 | -18°F 1919 | 50% | 24% |
| Dec 13 | 31°F | 21°F | 57°F 1924 | -17°F 1919 | 50% | 24% |
| Dec 14 | 30°F | 21°F | 54°F 1924 | -19°F 1922 | 50% | 25% |
| Dec 15 | 30°F | 21°F | 56°F 2025 | -17°F 1924 | 50% | 25% |
| Dec 16 | 30°F | 21°F | 52°F 1942 | -21°F 1964 | 50% | 26% |
| Dec 17 | 30°F | 20°F | 49°F 1942 | -24°F 1964 | 50% | 26% |
| Dec 18 | 30°F | 20°F | 53°F 1917 | -27°F 1924 | 50% | 27% |
| Dec 19 | 30°F | 20°F | 51°F 1941 | -25°F 1924 | 50% | 27% |
| Dec 20 | 30°F | 20°F | 51°F 2019 | -22°F 2008 | 50% | 27% |
| Dec 21 | 30°F | 20°F | 54°F 1933 | -25°F 1983 | 50% | 28% |
| Dec 22 | 30°F | 20°F | 55°F 1933 | -34°F 2022 | 50% | 28% |
| Dec 23 | 30°F | 20°F | 50°F 1899 | -26°F 1983 | 50% | 28% |
| Dec 24 | 30°F | 20°F | 53°F 1919 | -30°F 1983 | 50% | 29% |
| Dec 25 | 30°F | 20°F | 48°F 1899 | -21°F 1983 | 50% | 29% |
| Dec 26 | 30°F | 20°F | 51°F 1980 | -22°F 1951 | 50% | 29% |
| Dec 27 | 30°F | 20°F | 55°F 1898 | -20°F 1983 | 50% | 29% |
| Dec 28 | 30°F | 20°F | 49°F 1980 | -27°F 1983 | 50% | 29% |
| Dec 29 | 30°F | 20°F | 51°F 1929 | -35°F 1990 | 50% | 30% |
| Dec 30 | 30°F | 20°F | 48°F 1929 | -35°F 1968 | 50% | 30% |
| Dec 31 | 30°F | 20°F | 48°F 1963 | -33°F 1978 | 50% | 30% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 8:06 AM, sunset 4:44 PM
- December 31
- sunrise 8:27 AM, sunset 4:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00244328 (Hungry Horse Dam), public domain. Records: NOAA GHCN-Daily, station USC00244558, 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.