Weather on December 9 at Rocky Mountain
Rocky Mountain National Park
Based on 52 years of data from Estes Park, CO
Elevation Note: Rocky Mountain sits at 8,000 ft. Expect temperatures 28°F cooler than the data shown below, which comes from Estes Park, CO at a lower elevation.
Planning Your Visit
December 9th in Rocky Mountain National Park (via Estes Park, CO) typically brings cold winter weather, with average highs around 38°F and lows near 19°F. Over 52 years of records, the warmest December 9th was in 2020 (45°F average), while the coldest was 2009 (-4°F) — a 49°F range across recorded history. Precipitation has occurred on 27% of recorded December 9th dates, with snow falling 23% of the time (heaviest snowfall: 4.4"). The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
Planning for December 9th in Rocky Mountain? Bundle up with warm layers and protect extremities from the cold. Check road conditions if traveling, as snow is possible.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 42°F | 35°F | 0" | -- |
| 2024 | 49°F | 23°F | 0" | 0" |
| 2023 | 32°F | 9°F | 0.38" | 2.5" |
| 2022 | 36°F | 13°F | 0" | 0" |
| 2021 | 39°F | 27°F | -- | -- |
| 2020 | 57°F | 34°F | 0" | 0" |
| 2019 | 43°F | 24°F | 0.18" | 1.4" |
| 2018 | 37°F | 19°F | 0" | 0" |
| 2017 | 42°F | 35°F | 0" | 0" |
| 2016 | 30°F | -13°F | 0.03" | 0.1" |
| 2015 | 47°F | 39°F | 0" | 0" |
| 2014 | 52°F | 25°F | 0" | 0" |
| 2013 | 16°F | -6°F | 0" | 0" |
| 2012 | 32°F | 9°F | 0" | 0" |
| 2011 | 33°F | 19°F | 0" | 0" |
| 2010 | 47°F | 35°F | 0" | 0" |
| 2009 | 4°F | -11°F | 0.28" | 1.2" |
| 2008 | 36°F | 14°F | 0.3" | 2.2" |
| 2007 | 21°F | 3°F | 0.28" | 1.5" |
| 2006 | 50°F | 22°F | 0" | 0" |
| 2005 | 32°F | 18°F | 0" | 0" |
| 2004 | 35°F | 26°F | 0.15" | 1.2" |
| 2003 | 31°F | 8°F | 0.89" | 4.4" |
| 2002 | 37°F | 14°F | 0" | 0" |
| 2001 | 40°F | 25°F | 0" | 0" |
| 2000 | 38°F | 30°F | 0" | 0" |
| 1999 | 17°F | 1°F | 0.33" | 3.8" |
| 1998 | 31°F | 15°F | 0.13" | 2" |
| 1997 | 35°F | 20°F | 0" | 0" |
| 1996 | 47°F | 33°F | 0" | 0" |
| 1995 | 27°F | 20°F | 0.1" | 0.6" |
| 1994 | 19°F | 6°F | 0" | 0" |
| 1993 | 45°F | 36°F | 0" | 0" |
| 1992 | 40°F | 30°F | 0" | 0" |
| 1991 | 44°F | 29°F | 0" | 0" |
| 1990 | 54°F | 24°F | 0" | 0" |
| 1989 | 45°F | 38°F | 0.76" | 3" |
| 1988 | 39°F | 12°F | 0" | 0" |
| 1986 | 26°F | 10°F | 0.58" | -- |
| 1984 | 44°F | 35°F | 0" | 0" |
| 1983 | 45°F | 16°F | 0" | -- |
| 1982 | 51°F | 13°F | 0" | 0" |
| 1981 | 60°F | 19°F | 0" | -- |
| 1980 | 34°F | 0°F | 0" | 0" |
| 1978 | 35°F | -- | 0" | -- |
| 1977 | 43°F | 6°F | 0" | -- |
| 1976 | 48°F | 34°F | 0" | 0" |
| 1975 | 49°F | 39°F | 0" | -- |
| 1974 | 52°F | 10°F | 0" | 0" |
| 1973 | 48°F | 13°F | 0" | 0" |
| 1972 | 22°F | -1°F | 0.13" | -- |
| 1971 | 42°F | 22°F | 0" | -- |