Greybull Weather in December
Average highs run from 37°F on December 1 to 29°F on December 31, and lows from 10°F to 2°F. Normal precipitation for the month is 0.20 in over about 3 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
- 32°F
- Average low
- 6°F
- Precipitation
- 0.20 in
- Snowfall
- 4.2 in
- Record high
- 65°FDec 24, 2025
- Record low
- -36°FDec 22, 2022
- Chance of a freeze
- 100%
- Daylight
- 9 h 05 min to 8 h 53 min
- Cloud cover
- 62%
- Humidity
- 67%
- Dew point
- 16°F
- Wind
- 7.4 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 | 10°F | 64°F 1998 | -11°F 2007 | 8% | 7% |
| Dec 2 | 36°F | 10°F | 60°F 1998 | -10°F 2007 | 8% | 7% |
| Dec 3 | 36°F | 9°F | 54°F 1998 | -14°F 2006 | 8% | 7% |
| Dec 4 | 35°F | 9°F | 48°F 2004 | -7°F 2013 | 8% | 7% |
| Dec 5 | 35°F | 9°F | 58°F 2012 | -15°F 2013 | 8% | 7% |
| Dec 6 | 34°F | 8°F | 47°F 2003 | -15°F 2013 | 8% | 7% |
| Dec 7 | 34°F | 8°F | 50°F 2008 | -21°F 2013 | 8% | 7% |
| Dec 8 | 34°F | 8°F | 53°F 2024 | -22°F 2009 | 8% | 7% |
| Dec 9 | 33°F | 7°F | 52°F 2020 | -24°F 2009 | 8% | 7% |
| Dec 10 | 33°F | 7°F | 53°F 2004 | -22°F 2009 | 8% | 7% |
| Dec 11 | 32°F | 7°F | 63°F 2004 | -13°F 2009 | 8% | 7% |
| Dec 12 | 32°F | 6°F | 49°F 2017 | -15°F 2000 | 8% | 7% |
| Dec 13 | 32°F | 6°F | 51°F 2021 | -10°F 2000 | 8% | 8% |
| Dec 14 | 32°F | 6°F | 59°F 2021 | -19°F 2008 | 8% | 8% |
| Dec 15 | 31°F | 5°F | 57°F 2006 | -21°F 2008 | 8% | 8% |
| Dec 16 | 31°F | 5°F | 59°F 2025 | -16°F 2008 | 8% | 8% |
| Dec 17 | 31°F | 5°F | 59°F 2025 | -23°F 2016 | 8% | 8% |
| Dec 18 | 30°F | 5°F | 50°F 2024 | -25°F 2016 | 8% | 8% |
| Dec 19 | 30°F | 4°F | 56°F 2025 | -16°F 2016 | 8% | 9% |
| Dec 20 | 30°F | 4°F | 50°F 2020 | -16°F 2008 | 9% | 9% |
| Dec 21 | 30°F | 4°F | 52°F 2020 | -26°F 2022 | 9% | 9% |
| Dec 22 | 30°F | 4°F | 54°F 2020 | -36°F 2022 | 9% | 9% |
| Dec 23 | 30°F | 3°F | 56°F 2021 | -27°F 2022 | 9% | 9% |
| Dec 24 | 29°F | 3°F | 65°F 2025 | -20°F 2017 | 9% | 9% |
| Dec 25 | 29°F | 3°F | 60°F 2025 | -17°F 2002 | 9% | 10% |
| Dec 26 | 29°F | 3°F | 57°F 2025 | -18°F 2002 | 9% | 10% |
| Dec 27 | 29°F | 3°F | 48°F 2025 | -17°F 2017 | 9% | 10% |
| Dec 28 | 29°F | 3°F | 55°F 1998 | -10°F 2016 | 9% | 10% |
| Dec 29 | 29°F | 2°F | 47°F 2011 | -13°F 2016 | 10% | 10% |
| Dec 30 | 29°F | 2°F | 61°F 2002 | -9°F 2012 | 10% | 10% |
| Dec 31 | 29°F | 2°F | 58°F 2002 | -22°F 2014 | 10% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:29 AM, sunset 4:34 PM
- December 31
- sunrise 7:49 AM, sunset 4:42 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00484080 (Greybull), public domain. Records: NOAA GHCN-Daily, station USW00024048, 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.