Weather on December 15 at Grand Teton
Grand Teton National Park
Based on 55 years of data from Jackson, WY
Elevation Note: Grand Teton sits at 6,800 ft. Expect temperatures 24°F cooler than the data shown below, which comes from Jackson, WY at a lower elevation.
Planning Your Visit
December 15th in Grand Teton National Park (via Jackson, WY) typically brings very cold winter weather, with average highs around 29°F and lows near 8°F. Over 55 years of records, the warmest December 15th was in 2006 (38°F average), while the coldest was 1972 (-19°F) — a 57°F range across recorded history. Precipitation has occurred on 45% of recorded December 15th dates, with snow falling 35% of the time (heaviest snowfall: 8"). The last decade has been 6.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.0°F cooler on this date compared to 20-30 years ago.
Planning for December 15th in Grand Teton? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 38°F | 10°F | 0" | 0" |
| 2024 | 33°F | 28°F | 1.02" | 8" |
| 2023 | 26°F | 7°F | 0" | 0" |
| 2022 | 23°F | -1°F | 0.13" | 0.5" |
| 2021 | 39°F | 20°F | 0.71" | 3.1" |
| 2020 | 20°F | -7°F | 0" | 0" |
| 2019 | 25°F | -11°F | 0.03" | 0.3" |
| 2018 | 35°F | -4°F | 0" | 0" |
| 2017 | 30°F | 3°F | 0" | 0" |
| 2016 | 39°F | 9°F | 0.89" | 2.5" |
| 2015 | 28°F | 15°F | 0.3" | 2" |
| 2014 | 28°F | 16°F | 0.25" | 1" |
| 2013 | 30°F | 7°F | 0" | 0" |
| 2012 | 32°F | 18°F | 0.2" | 0.8" |
| 2011 | 25°F | 1°F | 0" | -- |
| 2010 | 38°F | 15°F | 0.48" | 0.5" |
| 2009 | 26°F | 13°F | 0.25" | -- |
| 2008 | 19°F | 7°F | 0.25" | 4" |
| 2007 | 19°F | -5°F | 0" | 0" |
| 2006 | 44°F | 32°F | 1.27" | -- |
| 2005 | 22°F | -11°F | -- | -- |
| 2004 | 44°F | 30°F | -- | 0" |
| 2003 | 39°F | 15°F | -- | -- |
| 2002 | 42°F | 30°F | 0" | 0" |
| 2001 | 39°F | 15°F | -- | -- |
| 2000 | 30°F | 23°F | 0.51" | 4" |
| 1999 | 22°F | 10°F | 1.02" | -- |
| 1998 | 43°F | 8°F | 0" | 0" |
| 1997 | 27°F | 18°F | 1.02" | -- |
| 1996 | 26°F | 12°F | 0.48" | 1" |
| 1995 | 42°F | 26°F | 0" | 0" |
| 1994 | 30°F | 5°F | 0.25" | 2" |
| 1993 | 23°F | -2°F | 0" | 0" |
| 1992 | 21°F | 0°F | 0.15" | 0.1" |
| 1991 | 25°F | -8°F | 0" | 0" |
| 1990 | 23°F | -25°F | 0" | 0" |
| 1989 | 36°F | 26°F | 0.08" | 0.8" |
| 1988 | 27°F | -1°F | 0" | 0" |
| 1987 | 15°F | -11°F | 0" | 0" |
| 1986 | 26°F | 0°F | 0" | 0" |
| 1985 | 27°F | -12°F | 0" | 0" |
| 1984 | 4°F | -25°F | 0" | 0" |
| 1983 | 26°F | 12°F | 0" | 0" |
| 1982 | 32°F | 22°F | 0.05" | 1.5" |
| 1981 | 37°F | 31°F | 0.76" | -- |
| 1980 | 35°F | -5°F | 0" | -- |
| 1979 | 41°F | 32°F | 0" | 0" |
| 1978 | 31°F | 20°F | 0.05" | 0.3" |
| 1977 | 41°F | 33°F | 0.81" | 0" |
| 1976 | 28°F | -6°F | 0" | 0" |
| 1975 | 37°F | 11°F | 0.38" | 1.5" |
| 1974 | 25°F | 0°F | 0.86" | 4" |
| 1973 | 35°F | 20°F | 0" | 0" |
| 1972 | -6°F | -33°F | 0" | 0" |
| 1971 | 22°F | 15°F | 0" | 0" |