Weather on October 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
October 18th in Yellowstone National Park (via Jackson, WY) typically brings cool fall weather, with average highs around 57°F and lows near 24°F — a 33°F daily swing. Over 55 years of records, the warmest October 18th was in 1995 (51°F average), while the coldest was 1984 (25°F) — a 26°F range across recorded history. Precipitation has occurred on 18% of recorded October 18th dates, with snow falling 2% of the time (heaviest snowfall: 2"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for October 18th in Yellowstone? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 51°F | 35°F | 0" | 0" |
| 2024 | 47°F | 33°F | 0.08" | 0" |
| 2023 | 66°F | 27°F | 0" | 0" |
| 2022 | 65°F | 19°F | 0" | 0" |
| 2021 | 62°F | 21°F | 0" | 0" |
| 2020 | 56°F | 43°F | 0" | 0" |
| 2019 | 60°F | 24°F | 0" | 0" |
| 2018 | 58°F | 18°F | 0" | 0" |
| 2017 | 64°F | 24°F | 0" | 0" |
| 2016 | 39°F | 31°F | 0.13" | 0" |
| 2015 | 66°F | 35°F | 0" | 0" |
| 2014 | 61°F | 23°F | 0" | 0" |
| 2013 | 44°F | 18°F | 0" | 0" |
| 2012 | 44°F | 18°F | 0" | 0" |
| 2011 | 61°F | 19°F | 0" | 0" |
| 2010 | 61°F | 18°F | 0" | 0" |
| 2009 | 66°F | 25°F | 0" | 0" |
| 2008 | 66°F | 24°F | 0" | 0" |
| 2007 | 43°F | 27°F | 0.03" | 0" |
| 2006 | 42°F | 20°F | -- | -- |
| 2005 | 66°F | 23°F | 0" | 0" |
| 2004 | 62°F | 34°F | -- | -- |
| 2003 | 75°F | 22°F | -- | -- |
| 2002 | 64°F | 16°F | -- | -- |
| 2001 | 55°F | 31°F | -- | -- |
| 2000 | 54°F | 32°F | 0" | -- |
| 1999 | 55°F | 33°F | -- | -- |
| 1998 | 51°F | 21°F | -- | -- |
| 1997 | 63°F | 22°F | 0" | 0" |
| 1996 | 55°F | 10°F | -- | -- |
| 1995 | 62°F | 40°F | 0.38" | 0" |
| 1994 | 52°F | 37°F | 0.13" | 0" |
| 1993 | 57°F | 18°F | 0" | 0" |
| 1992 | 64°F | 17°F | 0" | 0" |
| 1991 | 58°F | 29°F | 0" | 0" |
| 1990 | 54°F | 17°F | 0.03" | 0" |
| 1989 | 53°F | 14°F | 0" | 0" |
| 1988 | 65°F | 25°F | 0" | 0" |
| 1987 | 62°F | 32°F | 0" | 0" |
| 1986 | 60°F | 25°F | 0.38" | 0" |
| 1985 | 59°F | 16°F | 0" | 0" |
| 1984 | 30°F | 19°F | 0.13" | 0" |
| 1983 | 50°F | 32°F | 0.15" | 0" |
| 1982 | 55°F | 32°F | 0" | 0" |
| 1981 | 60°F | 16°F | 0" | -- |
| 1980 | 55°F | 33°F | 0" | 0" |
| 1979 | 57°F | 29°F | 0" | 0" |
| 1978 | 60°F | 30°F | 0" | 0" |
| 1977 | 66°F | 15°F | 0" | 0" |
| 1976 | 45°F | 10°F | 0" | 0" |
| 1975 | 67°F | 19°F | 0" | -- |
| 1974 | 70°F | 16°F | 0" | 0" |
| 1973 | 72°F | 20°F | 0" | 0" |
| 1972 | 50°F | 21°F | 0" | 0" |
| 1971 | 38°F | 31°F | 0.51" | 2" |