Glenrock Weather in December
Average highs run from 41°F on December 1 to 36°F on December 31, and lows from 21°F to 15°F. Normal precipitation for the month is 0.79 in.
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
- 37°F
- Average low
- 17°F
- Precipitation
- 0.79 in
- Record high
- 71°FDec 2, 2021
- Record low
- -29°FDec 22, 2022
- Chance of a freeze
- 100%
- Daylight
- 9 h 15 min to 9 h 05 min
- Cloud cover
- 65%
- Humidity
- 70%
- Dew point
- 16°F
- Wind
- 14.8 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 | 41°F | 21°F | 65°F 2021 | -2°F 2004 | |
| Dec 2 | 40°F | 21°F | 71°F 2021 | -7°F 2011 | |
| Dec 3 | 40°F | 21°F | 61°F 2017 | -4°F 2006 | |
| Dec 4 | 39°F | 20°F | 61°F 2021 | -11°F 2013 | |
| Dec 5 | 39°F | 20°F | 64°F 2012 | -18°F 2013 | |
| Dec 6 | 38°F | 20°F | 63°F 2023 | -13°F 2013 | |
| Dec 7 | 38°F | 19°F | 60°F 2024 | -21°F 2005 | |
| Dec 8 | 38°F | 19°F | 62°F 2020 | -22°F 2016 | |
| Dec 9 | 37°F | 18°F | 66°F 2020 | -27°F 2009 | |
| Dec 10 | 37°F | 18°F | 60°F 2014 | -9°F 2009 | |
| Dec 11 | 37°F | 18°F | 63°F 2014 | -20°F 2000 | |
| Dec 12 | 37°F | 18°F | 69°F 2014 | -18°F 2007 | |
| Dec 13 | 36°F | 17°F | 55°F 2010 | -15°F 2000 | |
| Dec 14 | 36°F | 17°F | 61°F 2025 | -16°F 2008 | |
| Dec 15 | 36°F | 17°F | 63°F 2025 | -19°F 2008 | |
| Dec 16 | 36°F | 16°F | 61°F 2025 | -10°F 2008 | |
| Dec 17 | 36°F | 16°F | 60°F 2025 | -17°F 2016 | |
| Dec 18 | 36°F | 16°F | 58°F 2013 | -18°F 2016 | |
| Dec 19 | 36°F | 16°F | 62°F 2025 | -9°F 2006 | |
| Dec 20 | 35°F | 16°F | 61°F 2003 | -9°F 2008 | |
| Dec 21 | 35°F | 15°F | 57°F 2025 | -20°F 2022 | |
| Dec 22 | 35°F | 15°F | 66°F 2025 | -29°F 2022 | |
| Dec 23 | 35°F | 15°F | 61°F 2025 | -19°F 2022 | |
| Dec 24 | 35°F | 15°F | 69°F 2025 | -16°F 2017 | |
| Dec 25 | 36°F | 15°F | 63°F 2025 | -7°F 2012 | |
| Dec 26 | 36°F | 15°F | 57°F 2025 | -16°F 2017 | |
| Dec 27 | 36°F | 15°F | 52°F 2022 | -17°F 2017 | |
| Dec 28 | 36°F | 15°F | 58°F 2002 | -16°F 2015 | |
| Dec 29 | 36°F | 15°F | 54°F 1999 | -11°F 2009 | |
| Dec 30 | 36°F | 15°F | 54°F 2011 | -21°F 2014 | |
| Dec 31 | 36°F | 15°F | 60°F 2025 | -25°F 2014 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:15 AM, sunset 4:30 PM
- December 31
- sunrise 7:34 AM, sunset 4:39 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00481572 (Casper 1SW), public domain. Records: NOAA GHCN-Daily, station USW00094057, 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.