Weather on August 15 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
August 15th in Yellowstone National Park (via Jackson, WY) typically brings warm summer weather, with average highs around 80°F and lows near 40°F — a 40°F daily swing. Over 55 years of records, the warmest August 15th was in 2003 (75°F average), while the coldest was 1974 (51°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 15th dates historically, with the wettest August 15th recording 0.86" of rain. The last decade has been 7.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 7.1°F cooler on this date compared to 20-30 years ago.
Planning for August 15th in Yellowstone? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 82°F | 42°F | 0" | 0" |
| 2024 | 68°F | 34°F | 0.08" | 0" |
| 2023 | 79°F | 39°F | 0" | 0" |
| 2022 | 77°F | 43°F | 0" | 0" |
| 2021 | 86°F | 44°F | 0" | 0" |
| 2020 | 76°F | 33°F | 0" | 0" |
| 2019 | 78°F | 37°F | 0" | 0" |
| 2018 | 79°F | 35°F | 0" | 0" |
| 2017 | 63°F | 42°F | 0.05" | 0" |
| 2016 | 78°F | 39°F | 0" | 0" |
| 2015 | 77°F | 49°F | 0" | 0" |
| 2014 | 74°F | 45°F | 0.03" | 0" |
| 2013 | 83°F | 32°F | 0" | 0" |
| 2012 | 80°F | 48°F | 0" | -- |
| 2011 | 78°F | 40°F | 0" | 0" |
| 2010 | 78°F | 28°F | 0" | 0" |
| 2009 | 77°F | 43°F | 0" | 0" |
| 2008 | 77°F | 42°F | 0" | 0" |
| 2007 | 88°F | 42°F | 0" | 0" |
| 2006 | 83°F | 41°F | -- | -- |
| 2005 | 81°F | 31°F | -- | -- |
| 2004 | 88°F | 47°F | -- | -- |
| 2003 | 95°F | 55°F | -- | -- |
| 2002 | 85°F | 48°F | -- | -- |
| 2001 | 78°F | 41°F | -- | -- |
| 2000 | 89°F | 35°F | 0" | -- |
| 1999 | 82°F | 50°F | -- | -- |
| 1998 | 87°F | 42°F | 0" | 0" |
| 1997 | 78°F | 49°F | 0" | 0" |
| 1996 | 91°F | 45°F | 0" | 0" |
| 1995 | 83°F | 33°F | 0" | 0" |
| 1994 | 87°F | 42°F | 0" | 0" |
| 1993 | 81°F | 38°F | 0" | 0" |
| 1992 | 91°F | 40°F | 0" | 0" |
| 1991 | 83°F | 52°F | 0.86" | 0" |
| 1990 | 87°F | 39°F | 0" | 0" |
| 1989 | 73°F | 41°F | 0.03" | 0" |
| 1988 | 86°F | 30°F | 0" | 0" |
| 1987 | 62°F | 41°F | 0.33" | 0" |
| 1986 | 82°F | 34°F | 0" | 0" |
| 1985 | 72°F | 32°F | 0" | 0" |
| 1984 | 80°F | 44°F | 0" | 0" |
| 1983 | 72°F | 46°F | 0" | 0" |
| 1982 | 89°F | 39°F | 0" | 0" |
| 1981 | 82°F | 39°F | 0.08" | 0" |
| 1980 | 65°F | 49°F | 0.58" | 0" |
| 1979 | 74°F | 40°F | 0" | 0" |
| 1978 | 68°F | 40°F | 0" | 0" |
| 1977 | 84°F | 38°F | 0" | 0" |
| 1976 | 80°F | 40°F | 0.38" | 0" |
| 1975 | 71°F | 41°F | 0.08" | 0" |
| 1974 | 73°F | 28°F | 0" | 0" |
| 1973 | 85°F | 32°F | 0" | 0" |
| 1972 | 78°F | 41°F | 0" | 0" |
| 1971 | 87°F | 39°F | 0" | 0" |