Weather on December 18 at Yellowstone
Yellowstone National Park
Based on 55 years of data from Jackson, WY
Elevation Note: Yellowstone sits at 7,350 ft. Expect temperatures 26°F cooler than the data shown below, which comes from Jackson, WY at a lower elevation.
Planning Your Visit
December 18th in Yellowstone National Park (via Jackson, WY) typically brings very cold winter weather, with average highs around 27°F and lows near 4°F. Over 55 years of records, the warmest December 18th was in 1972 (36°F average), while the coldest was 2022 (-3°F) — a 39°F range across recorded history. Precipitation has occurred on 29% of recorded December 18th dates, with snow falling 18% of the time (heaviest snowfall: 15"). The last decade has been 5.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.6°F cooler on this date compared to 20-30 years ago.
Planning for December 18th in Yellowstone? Bundle up with warm layers and protect extremities from the cold.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 45°F | 21°F | 0.51" | 0" |
| 2024 | 35°F | 27°F | 0" | 0" |
| 2023 | 26°F | 3°F | 0" | 0" |
| 2022 | 11°F | -17°F | 0" | 0" |
| 2021 | 23°F | -7°F | 0.03" | 0" |
| 2020 | 30°F | 17°F | 0.25" | 1" |
| 2019 | 14°F | -14°F | 0" | 0" |
| 2018 | 35°F | 4°F | 0" | 0" |
| 2017 | 28°F | 6°F | 0" | 0" |
| 2016 | 8°F | -7°F | 0" | 0" |
| 2015 | 30°F | 8°F | 0.1" | 0.2" |
| 2014 | 33°F | 16°F | 0.03" | 0.2" |
| 2013 | 38°F | 5°F | 0" | 0" |
| 2012 | 36°F | 17°F | 0.2" | -- |
| 2011 | 27°F | -3°F | 0" | -- |
| 2010 | 21°F | -1°F | 0" | 0" |
| 2009 | 22°F | 11°F | 0" | -- |
| 2008 | 22°F | -11°F | 0" | 0" |
| 2007 | 31°F | 24°F | 0.05" | 0" |
| 2006 | 18°F | -7°F | -- | -- |
| 2005 | 12°F | -5°F | 0.25" | -- |
| 2004 | 31°F | 12°F | -- | -- |
| 2003 | 29°F | 7°F | 0" | -- |
| 2002 | 34°F | 12°F | 0" | 0" |
| 2001 | 34°F | 15°F | 0" | 0.3" |
| 2000 | 27°F | 17°F | -- | -- |
| 1999 | 25°F | 18°F | 1.02" | -- |
| 1998 | 47°F | 9°F | 0" | -- |
| 1997 | 37°F | 31°F | 0.08" | 0.1" |
| 1996 | 27°F | -15°F | 0" | 0" |
| 1995 | 18°F | 2°F | 0" | -- |
| 1994 | 41°F | 11°F | 0" | 0" |
| 1993 | 26°F | -5°F | 0.03" | 0" |
| 1992 | 15°F | -14°F | 0" | 0" |
| 1991 | 17°F | -7°F | 0.05" | 0.6" |
| 1990 | 27°F | -3°F | 1.32" | 8" |
| 1989 | 12°F | -13°F | 0.25" | 1" |
| 1988 | 13°F | -8°F | 0" | 0" |
| 1987 | 32°F | 4°F | 0" | 0" |
| 1986 | 12°F | -11°F | 0" | 0" |
| 1985 | 33°F | 5°F | 0" | 0" |
| 1984 | 19°F | -21°F | 0" | 0" |
| 1983 | 22°F | -16°F | 0" | 0" |
| 1982 | 35°F | 22°F | 0" | 0" |
| 1981 | 27°F | -4°F | 0" | -- |
| 1980 | 27°F | 4°F | 0" | 0" |
| 1979 | 46°F | 4°F | 0" | 0" |
| 1978 | 26°F | -7°F | 2.46" | 15" |
| 1977 | 29°F | 10°F | 0" | 0" |
| 1976 | 28°F | -9°F | 0" | 0" |
| 1975 | 28°F | 8°F | 0" | 0" |
| 1974 | 34°F | 12°F | 0" | 0" |
| 1973 | 34°F | 24°F | 0.28" | 2" |
| 1972 | 41°F | 31°F | 0" | 0" |
| 1971 | 27°F | 0°F | 0" | 0" |