Weather on September 11 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
September 11th in Yellowstone National Park (via Jackson, WY) typically brings pleasant fall weather, with average highs around 71°F and lows near 35°F — a 36°F daily swing. Over 55 years of records, the warmest September 11th was in 1996 (67°F average), while the coldest was 2003 (40°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 11th dates historically, with the wettest September 11th recording 2.01" of rain. 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 September 11th in Yellowstone? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 45°F | 0.53" | 0" |
| 2024 | 79°F | 43°F | 0.46" | 0" |
| 2023 | 75°F | 32°F | 0" | 0" |
| 2022 | 67°F | 27°F | 0" | 0" |
| 2021 | 80°F | 45°F | 0.48" | 0" |
| 2020 | 69°F | 25°F | 0" | 0" |
| 2019 | 56°F | 42°F | 0.56" | 0" |
| 2018 | 77°F | 33°F | 0" | 0" |
| 2017 | 73°F | 38°F | 0" | 0" |
| 2016 | 71°F | 26°F | 0" | 0" |
| 2015 | 74°F | 30°F | 0" | 0" |
| 2014 | 62°F | 32°F | 0" | 0" |
| 2013 | 71°F | 38°F | 0" | 0" |
| 2012 | 60°F | 40°F | 0" | -- |
| 2011 | 79°F | 35°F | 0" | 0" |
| 2010 | 59°F | 30°F | 0" | -- |
| 2009 | 77°F | 29°F | 0" | 0" |
| 2008 | 66°F | 29°F | 0" | 0" |
| 2007 | 77°F | 27°F | 0" | 0" |
| 2006 | 78°F | 44°F | -- | -- |
| 2005 | 56°F | 36°F | -- | -- |
| 2004 | 81°F | 34°F | 0" | -- |
| 2003 | 52°F | 28°F | -- | -- |
| 2002 | 70°F | 31°F | -- | -- |
| 2001 | 80°F | 26°F | -- | -- |
| 2000 | 60°F | 40°F | 0" | -- |
| 1999 | 77°F | 33°F | -- | -- |
| 1998 | 71°F | 41°F | 0.13" | -- |
| 1997 | 76°F | 48°F | 2.01" | 0" |
| 1996 | 86°F | 48°F | 0" | 0" |
| 1995 | 68°F | 32°F | 0.15" | 0" |
| 1994 | 75°F | 32°F | 0.1" | 0" |
| 1993 | 81°F | 33°F | 0" | 0" |
| 1992 | 74°F | 31°F | 0" | 0" |
| 1991 | 56°F | 40°F | 1.17" | 0" |
| 1990 | 83°F | 28°F | 0" | 0" |
| 1989 | 61°F | 29°F | 0.03" | 0" |
| 1988 | 60°F | 23°F | 0.46" | 0" |
| 1987 | 75°F | 24°F | 0" | 0" |
| 1986 | 65°F | 39°F | 0" | -- |
| 1985 | 70°F | 30°F | 0" | 0" |
| 1984 | 73°F | 30°F | -- | 0" |
| 1983 | 70°F | 51°F | 0" | 0" |
| 1982 | 62°F | 34°F | 0" | 0" |
| 1981 | 82°F | 33°F | 0" | 0" |
| 1980 | 65°F | 45°F | 0.79" | 0" |
| 1979 | 69°F | 23°F | 0" | 0" |
| 1978 | 56°F | 39°F | 0.25" | 0" |
| 1977 | 78°F | 25°F | 0.3" | 0" |
| 1976 | 79°F | 38°F | 0.18" | 0" |
| 1975 | 73°F | 46°F | 0.15" | 0" |
| 1974 | 68°F | 31°F | 0.2" | 0" |
| 1973 | 72°F | 45°F | 0.51" | 0" |
| 1972 | 71°F | 36°F | 0" | 0" |
| 1971 | 79°F | 33°F | 0" | 0" |