Rupert Weather in December
Average highs run from 37°F on December 1 to 32°F on December 31, and lows from 22°F to 18°F. Normal precipitation for the month is 1.24 in over about 11 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
- 34°F
- Average low
- 19°F
- Precipitation
- 1.24 in
- Snowfall
- 4.6 in
- Record high
- 65°FDec 1, 1995
- Record low
- -23°FDec 11, 1972
- Chance of a freeze
- 100%
- Daylight
- 9 h 17 min to 9 h 06 min
- Cloud cover
- 69%
- Humidity
- 80%
- Dew point
- 20°F
- Wind
- 8.9 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 | 37°F | 22°F | 65°F 1995 | -6°F 2015 | 33% | 8% |
| Dec 2 | 37°F | 22°F | 62°F 2021 | 1°F 2015 | 34% | 8% |
| Dec 3 | 37°F | 21°F | 61°F 1958 | 7°F 2011 | 34% | 9% |
| Dec 4 | 36°F | 21°F | 59°F 2021 | 1°F 1992 | 34% | 9% |
| Dec 5 | 36°F | 21°F | 57°F 1987 | -8°F 1972 | 34% | 9% |
| Dec 6 | 36°F | 21°F | 59°F 1981 | -2°F 1972 | 35% | 9% |
| Dec 7 | 35°F | 20°F | 58°F 1981 | -1°F 1951 | 35% | 9% |
| Dec 8 | 35°F | 20°F | 60°F 1976 | -9°F 1972 | 35% | 10% |
| Dec 9 | 35°F | 20°F | 60°F 1981 | -19°F 1972 | 35% | 10% |
| Dec 10 | 34°F | 20°F | 64°F 2025 | -19°F 1972 | 35% | 10% |
| Dec 11 | 34°F | 20°F | 62°F 2025 | -23°F 1972 | 35% | 10% |
| Dec 12 | 34°F | 20°F | 62°F 2014 | -7°F 1985 | 35% | 10% |
| Dec 13 | 34°F | 19°F | 56°F 2025 | -13°F 1972 | 35% | 10% |
| Dec 14 | 33°F | 19°F | 54°F 2021 | -20°F 1972 | 35% | 11% |
| Dec 15 | 33°F | 19°F | 54°F 1979 | -3°F 1972 | 34% | 11% |
| Dec 16 | 33°F | 19°F | 59°F 2025 | -1°F 1948 | 34% | 11% |
| Dec 17 | 33°F | 19°F | 57°F 2025 | -5°F 1984 | 34% | 11% |
| Dec 18 | 33°F | 19°F | 58°F 1979 | -5°F 2022 | 34% | 12% |
| Dec 19 | 33°F | 19°F | 57°F 1979 | -5°F 1984 | 34% | 12% |
| Dec 20 | 33°F | 19°F | 54°F 1961 | -9°F 1990 | 33% | 12% |
| Dec 21 | 33°F | 19°F | 59°F 2020 | -21°F 1990 | 33% | 12% |
| Dec 22 | 32°F | 19°F | 58°F 1964 | -21°F 1990 | 33% | 12% |
| Dec 23 | 32°F | 19°F | 58°F 1964 | -22°F 1990 | 33% | 13% |
| Dec 24 | 32°F | 18°F | 57°F 2025 | -16°F 1990 | 33% | 13% |
| Dec 25 | 32°F | 18°F | 54°F 1955 | -12°F 1951 | 33% | 13% |
| Dec 26 | 32°F | 18°F | 62°F 1980 | -4°F 1985 | 32% | 13% |
| Dec 27 | 32°F | 18°F | 61°F 1980 | -5°F 1988 | 32% | 14% |
| Dec 28 | 32°F | 18°F | 53°F 1949 | -6°F 1954 | 32% | 14% |
| Dec 29 | 32°F | 18°F | 54°F 1962 | -15°F 1990 | 32% | 14% |
| Dec 30 | 32°F | 18°F | 59°F 2011 | -18°F 1990 | 31% | 14% |
| Dec 31 | 32°F | 18°F | 53°F 1996 | -12°F 1978 | 31% | 14% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:45 AM, sunset 5:02 PM
- December 31
- sunrise 8:05 AM, sunset 5:11 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00106877 (Paul 1ENE), public domain. Records: NOAA GHCN-Daily, station USW00024133, 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.