Routt County Weather in December
Average highs run from 35°F on December 1 to 28°F on December 31, and lows from 10°F to 4°F. Normal precipitation for the month is 1.96 in over about 13 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
- 30°F
- Average low
- 6°F
- Precipitation
- 1.96 in
- Snowfall
- 35.8 in
- Record high
- 64°FDec 10, 1939
- Record low
- -44°FDec 18, 1909
- Chance of a freeze
- 100%
- Daylight
- 9 h 30 min to 9 h 20 min
- Cloud cover
- 62%
- Humidity
- 93%
- Dew point
- 11°F
- Wind
- 5.8 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 | 10°F | 55°F 1910 | -21°F 1979 | 41% | 39% |
| Dec 2 | 34°F | 10°F | 56°F 1897 | -16°F 1897 | 41% | 40% |
| Dec 3 | 34°F | 10°F | 60°F 2021 | -22°F 1898 | 41% | 40% |
| Dec 4 | 34°F | 9°F | 58°F 2017 | -19°F 1934 | 42% | 40% |
| Dec 5 | 33°F | 9°F | 63°F 1939 | -23°F 1909 | 42% | 41% |
| Dec 6 | 33°F | 9°F | 59°F 1939 | -28°F 1912 | 42% | 41% |
| Dec 7 | 32°F | 8°F | 61°F 1897 | -21°F 1964 | 42% | 42% |
| Dec 8 | 32°F | 8°F | 60°F 1897 | -36°F 1978 | 43% | 42% |
| Dec 9 | 32°F | 8°F | 62°F 1939 | -32°F 1951 | 43% | 42% |
| Dec 10 | 31°F | 7°F | 64°F 1939 | -28°F 1972 | 43% | 43% |
| Dec 11 | 31°F | 7°F | 64°F 1939 | -23°F 1978 | 43% | 43% |
| Dec 12 | 31°F | 7°F | 51°F 1948 | -25°F 1979 | 44% | 43% |
| Dec 13 | 31°F | 6°F | 52°F 1962 | -38°F 1932 | 44% | 44% |
| Dec 14 | 30°F | 6°F | 51°F 1948 | -31°F 1932 | 44% | 44% |
| Dec 15 | 30°F | 6°F | 54°F 1962 | -31°F 1972 | 44% | 44% |
| Dec 16 | 30°F | 6°F | 57°F 1929 | -26°F 1932 | 44% | 45% |
| Dec 17 | 30°F | 6°F | 54°F 1939 | -29°F 1909 | 45% | 45% |
| Dec 18 | 29°F | 5°F | 51°F 1959 | -44°F 1909 | 45% | 45% |
| Dec 19 | 29°F | 5°F | 46°F 1955 | -32°F 1945 | 45% | 45% |
| Dec 20 | 29°F | 5°F | 53°F 2025 | -34°F 1924 | 45% | 45% |
| Dec 21 | 29°F | 5°F | 50°F 2023 | -25°F 1908 | 45% | 46% |
| Dec 22 | 29°F | 5°F | 55°F 1921 | -37°F 1990 | 45% | 46% |
| Dec 23 | 29°F | 5°F | 59°F 2025 | -40°F 1990 | 45% | 46% |
| Dec 24 | 29°F | 5°F | 58°F 1955 | -37°F 1924 | 45% | 46% |
| Dec 25 | 29°F | 4°F | 59°F 2025 | -39°F 1924 | 45% | 46% |
| Dec 26 | 28°F | 4°F | 54°F 2025 | -36°F 1962 | 45% | 46% |
| Dec 27 | 28°F | 4°F | 52°F 2025 | -27°F 1915 | 45% | 46% |
| Dec 28 | 28°F | 4°F | 49°F 1980 | -35°F 1916 | 45% | 46% |
| Dec 29 | 28°F | 4°F | 53°F 1965 | -32°F 1969 | 46% | 46% |
| Dec 30 | 28°F | 4°F | 53°F 2017 | -30°F 1916 | 46% | 47% |
| Dec 31 | 28°F | 4°F | 49°F 2011 | -27°F 1931 | 46% | 47% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:12 AM, sunset 4:42 PM
- December 31
- sunrise 7:31 AM, sunset 4:51 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00057936 (Steamboat Springs), public domain. Records: NOAA GHCN-Daily, station USC00057936, 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.