Chinook Weather in December
Average highs run from 35°F on December 1 to 27°F on December 31, and lows from 12°F to 4°F. Normal precipitation for the month is 0.39 in over about 5 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
- 8°F
- Precipitation
- 0.39 in
- Snowfall
- 8.2 in
- Record high
- 69°FDec 1, 2021
- Record low
- -50°FDec 24, 1983
- Chance of a freeze
- 100%
- Daylight
- 8 h 36 min to 8 h 22 min
- Cloud cover
- 71%
- Humidity
- 79%
- Dew point
- 17°F
- Wind
- 12.1 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 | 35°F | 12°F | 69°F 2021 | -31°F 1985 | 16% | 17% |
| Dec 2 | 35°F | 12°F | 60°F 1979 | -33°F 1985 | 16% | 17% |
| Dec 3 | 35°F | 11°F | 63°F 1987 | -27°F 1972 | 16% | 18% |
| Dec 4 | 34°F | 11°F | 61°F 1990 | -30°F 1972 | 16% | 18% |
| Dec 5 | 34°F | 11°F | 63°F 2023 | -28°F 2013 | 16% | 18% |
| Dec 6 | 34°F | 10°F | 64°F 1987 | -38°F 2013 | 16% | 18% |
| Dec 7 | 33°F | 10°F | 57°F 1990 | -39°F 2013 | 16% | 18% |
| Dec 8 | 33°F | 10°F | 61°F 1990 | -36°F 1977 | 16% | 18% |
| Dec 9 | 32°F | 9°F | 61°F 1979 | -37°F 1977 | 16% | 19% |
| Dec 10 | 32°F | 9°F | 60°F 2017 | -26°F 1961 | 16% | 19% |
| Dec 11 | 32°F | 9°F | 56°F 2004 | -35°F 1961 | 16% | 19% |
| Dec 12 | 31°F | 8°F | 58°F 2017 | -35°F 1961 | 16% | 19% |
| Dec 13 | 31°F | 8°F | 63°F 1998 | -25°F 1963 | 16% | 20% |
| Dec 14 | 31°F | 8°F | 61°F 2002 | -33°F 2008 | 16% | 20% |
| Dec 15 | 31°F | 8°F | 65°F 1962 | -30°F 2008 | 16% | 20% |
| Dec 16 | 30°F | 7°F | 60°F 1980 | -31°F 2016 | 16% | 20% |
| Dec 17 | 30°F | 7°F | 61°F 1976 | -34°F 1984 | 16% | 21% |
| Dec 18 | 30°F | 7°F | 57°F 1979 | -35°F 1983 | 16% | 21% |
| Dec 19 | 29°F | 6°F | 60°F 2004 | -28°F 1990 | 16% | 21% |
| Dec 20 | 29°F | 6°F | 58°F 1994 | -28°F 1990 | 17% | 21% |
| Dec 21 | 29°F | 6°F | 59°F 2019 | -44°F 1989 | 17% | 21% |
| Dec 22 | 29°F | 6°F | 56°F 2023 | -45°F 1989 | 17% | 22% |
| Dec 23 | 28°F | 5°F | 52°F 1994 | -41°F 1983 | 17% | 22% |
| Dec 24 | 28°F | 5°F | 56°F 1999 | -50°F 1983 | 17% | 22% |
| Dec 25 | 28°F | 5°F | 53°F 2005 | -33°F 1983 | 17% | 22% |
| Dec 26 | 28°F | 5°F | 56°F 1980 | -29°F 1964 | 17% | 22% |
| Dec 27 | 28°F | 5°F | 60°F 1980 | -26°F 2021 | 17% | 23% |
| Dec 28 | 27°F | 5°F | 57°F 2011 | -39°F 1968 | 18% | 23% |
| Dec 29 | 27°F | 4°F | 54°F 1999 | -46°F 1968 | 18% | 23% |
| Dec 30 | 27°F | 4°F | 54°F 1980 | -31°F 1978 | 18% | 23% |
| Dec 31 | 27°F | 4°F | 55°F 1963 | -36°F 1984 | 18% | 23% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:48 AM, sunset 4:24 PM
- December 31
- sunrise 8:09 AM, sunset 4:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00241722 (Chinook), public domain. Records: NOAA GHCN-Daily, station USW00094012, 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.