Weather on October 20 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
October 20th in Yellowstone National Park (via Jackson, WY) typically brings cool fall weather, with average highs around 57°F and lows near 23°F — a 34°F daily swing. Over 55 years of records, the warmest October 20th was in 2020 (51°F average), while the coldest was 1984 (23°F) — a 28°F range across recorded history. Precipitation has occurred on 16% of recorded October 20th dates, with snow falling 4% of the time (heaviest snowfall: 1.5"). The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Yellowstone? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 60°F | 33°F | 0.53" | 0" |
| 2024 | 54°F | 22°F | -- | 0" |
| 2023 | 69°F | 23°F | 0" | 0" |
| 2022 | 67°F | 17°F | 0" | 0" |
| 2021 | 56°F | 31°F | 0" | 0" |
| 2020 | 56°F | 47°F | 0" | 0" |
| 2019 | 39°F | 28°F | 0.3" | 0.3" |
| 2018 | 60°F | 18°F | 0" | 0" |
| 2017 | 66°F | 22°F | 0" | 0" |
| 2016 | 43°F | 18°F | 0" | 0" |
| 2015 | 48°F | 36°F | 0.74" | 0" |
| 2014 | 65°F | 20°F | 0" | 0" |
| 2013 | 53°F | 28°F | 0" | 0" |
| 2012 | 58°F | 21°F | 0" | 0" |
| 2011 | 57°F | 21°F | 0" | 0" |
| 2010 | 62°F | 14°F | 0" | 0" |
| 2009 | 50°F | 30°F | 0.3" | 0" |
| 2008 | 62°F | 26°F | 0" | 0" |
| 2007 | 44°F | 31°F | 0" | 0" |
| 2006 | 49°F | 33°F | -- | -- |
| 2005 | 65°F | 24°F | 0" | 0" |
| 2004 | 46°F | 35°F | 2.44" | 1.5" |
| 2003 | 74°F | 25°F | -- | -- |
| 2002 | 63°F | 15°F | -- | -- |
| 2001 | 45°F | 28°F | 0" | -- |
| 2000 | 49°F | 28°F | 0" | -- |
| 1999 | 60°F | 15°F | -- | -- |
| 1998 | 55°F | 15°F | -- | -- |
| 1997 | 69°F | 18°F | 0" | 0" |
| 1996 | 38°F | 24°F | -- | -- |
| 1995 | 52°F | 12°F | 0" | 0" |
| 1994 | 55°F | 23°F | 0.03" | 0" |
| 1993 | 55°F | 15°F | 0" | 0" |
| 1992 | 69°F | 18°F | 0" | 0" |
| 1991 | 60°F | 17°F | 0" | 0" |
| 1990 | 44°F | 22°F | 0" | 0" |
| 1989 | 67°F | 17°F | 0" | 0" |
| 1988 | 62°F | 29°F | 0" | 0" |
| 1987 | 57°F | 3°F | 0" | 0" |
| 1986 | 58°F | 31°F | 0" | 0" |
| 1985 | 66°F | 18°F | 0" | 0" |
| 1984 | 35°F | 10°F | 0" | 0" |
| 1983 | 60°F | 18°F | 0" | 0" |
| 1982 | 51°F | 10°F | 0" | 0" |
| 1981 | 60°F | 36°F | 0" | -- |
| 1980 | 56°F | 19°F | 0" | 0" |
| 1979 | 44°F | 31°F | 0.3" | 0" |
| 1978 | 67°F | 27°F | 0" | 0" |
| 1977 | 68°F | 24°F | 0" | 0" |
| 1976 | 58°F | 8°F | 0" | 0" |
| 1975 | 60°F | 37°F | 0" | -- |
| 1974 | 72°F | 15°F | 0" | 0" |
| 1973 | 65°F | 25°F | 0.18" | 0" |
| 1972 | 57°F | 38°F | 0.18" | 0" |
| 1971 | 54°F | 30°F | 0" | 0" |