Glacier County Weather in December
Average highs run from 32°F on December 1 to 31°F on December 31, and lows from 20°F to 15°F. Normal precipitation for the month is 2.13 in over about 14 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
- 17°F
- Precipitation
- 2.13 in
- Record high
- 67°FDec 5, 1939
- Record low
- -46°FDec 18, 1924
- Chance of a freeze
- 100%
- Daylight
- 8 h 34 min to 8 h 21 min
- Cloud cover
- 69%
- Humidity
- 93%
- Dew point
- 14°F
- Wind
- 11.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 32°F | 20°F | 62°F 2021 | -27°F 1985 | 45% |
| Dec 2 | 32°F | 20°F | 60°F 1963 | -28°F 1985 | 45% |
| Dec 3 | 32°F | 20°F | 59°F 1987 | -28°F 1972 | 45% |
| Dec 4 | 32°F | 19°F | 61°F 1988 | -29°F 1972 | 45% |
| Dec 5 | 31°F | 19°F | 67°F 1939 | -26°F 1956 | 45% |
| Dec 6 | 31°F | 19°F | 60°F 2023 | -32°F 1956 | 45% |
| Dec 7 | 31°F | 19°F | 57°F 1911 | -35°F 2013 | 45% |
| Dec 8 | 31°F | 18°F | 59°F 2020 | -34°F 1972 | 45% |
| Dec 9 | 31°F | 18°F | 64°F 1925 | -32°F 1977 | 45% |
| Dec 10 | 31°F | 18°F | 62°F 1921 | -23°F 2000 | 46% |
| Dec 11 | 31°F | 18°F | 59°F 1939 | -34°F 1932 | 46% |
| Dec 12 | 30°F | 17°F | 59°F 1962 | -31°F 1922 | 46% |
| Dec 13 | 30°F | 17°F | 58°F 2023 | -33°F 1922 | 46% |
| Dec 14 | 30°F | 17°F | 65°F 1952 | -28°F 1922 | 46% |
| Dec 15 | 30°F | 17°F | 58°F 1962 | -35°F 1979 | 47% |
| Dec 16 | 30°F | 17°F | 62°F 1980 | -38°F 1979 | 47% |
| Dec 17 | 30°F | 16°F | 57°F 1913 | -32°F 1922 | 47% |
| Dec 18 | 30°F | 16°F | 59°F 1913 | -46°F 1924 | 47% |
| Dec 19 | 30°F | 16°F | 61°F 1954 | -28°F 2022 | 48% |
| Dec 20 | 30°F | 16°F | 54°F 1941 | -29°F 1990 | 48% |
| Dec 21 | 30°F | 16°F | 57°F 1954 | -33°F 1990 | 48% |
| Dec 22 | 30°F | 16°F | 56°F 1994 | -32°F 1990 | 48% |
| Dec 23 | 30°F | 16°F | 57°F 1994 | -34°F 1983 | 48% |
| Dec 24 | 30°F | 16°F | 56°F 1950 | -40°F 1983 | 48% |
| Dec 25 | 31°F | 15°F | 56°F 2005 | -31°F 1983 | 48% |
| Dec 26 | 31°F | 15°F | 58°F 1980 | -27°F 1934 | 48% |
| Dec 27 | 31°F | 15°F | 61°F 1999 | -26°F 2021 | 49% |
| Dec 28 | 31°F | 15°F | 60°F 1956 | -35°F 1968 | 49% |
| Dec 29 | 31°F | 15°F | 60°F 1956 | -37°F 1968 | 49% |
| Dec 30 | 31°F | 15°F | 51°F 1903 | -32°F 1923 | 49% |
| Dec 31 | 31°F | 15°F | 55°F 2025 | -36°F 1923 | 49% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 8:04 AM, sunset 4:38 PM
- December 31
- sunrise 8:25 AM, sunset 4:46 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00004130 (St. Mary 1 Ssw), public domain. Records: NOAA GHCN-Daily, station USW00024137, 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.