Weather on September 22 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
September 22nd in Indiana Dunes National Park (via Gary, IN) typically brings pleasant fall weather, with average highs around 74°F and lows near 53°F. Over 55 years of records, the warmest September 22nd was in 1986 (81°F average), while the coldest was 1995 (41°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 35% of September 22nd dates historically, with the wettest September 22nd recording 5.26" of rain. The last decade has been 8.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.2°F warmer on this date compared to 20-30 years ago.
Planning for September 22nd in Indiana Dunes? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 86°F | 64°F | 0.28" | 0" |
| 2024 | 89°F | 65°F | 0" | 0" |
| 2023 | 78°F | 63°F | 0" | 0" |
| 2022 | 85°F | 57°F | 0" | 0" |
| 2021 | 66°F | 56°F | 0.66" | 0" |
| 2020 | 77°F | 47°F | 0" | 0" |
| 2019 | 79°F | 68°F | -- | -- |
| 2018 | 65°F | 48°F | -- | -- |
| 2017 | 93°F | 68°F | 0" | 0" |
| 2016 | 82°F | 63°F | 0" | 0" |
| 2015 | 69°F | 50°F | 0" | 0" |
| 2014 | 62°F | 50°F | 0" | 0" |
| 2013 | 64°F | 52°F | 0" | 0" |
| 2012 | 62°F | 48°F | 0.28" | 0" |
| 2011 | 74°F | 52°F | 0" | 0" |
| 2010 | 90°F | 65°F | 0.97" | 0" |
| 2009 | 71°F | 59°F | 0.03" | 0" |
| 2008 | 79°F | 62°F | 0" | 0" |
| 2007 | 89°F | 62°F | 0" | 0" |
| 2006 | 68°F | 47°F | 0.18" | 0" |
| 2005 | 86°F | 64°F | 0.08" | 0" |
| 2004 | 83°F | 53°F | 0" | 0" |
| 2003 | 77°F | 53°F | 0.97" | 0" |
| 2002 | 80°F | 52°F | 0.1" | 0" |
| 2001 | 69°F | 51°F | 0" | 0" |
| 2000 | 61°F | 49°F | 0" | 0" |
| 1999 | 76°F | 31°F | 0" | 0" |
| 1998 | 72°F | 40°F | 0" | 0" |
| 1997 | 66°F | 50°F | 0.53" | 0" |
| 1996 | 73°F | 46°F | 0" | 0" |
| 1995 | 53°F | 29°F | -- | 0" |
| 1994 | 82°F | 62°F | 0" | 0" |
| 1993 | 72°F | 49°F | 0" | 0" |
| 1992 | 67°F | 55°F | 0.25" | 0" |
| 1991 | 67°F | 46°F | 0.58" | 0" |
| 1990 | 68°F | 48°F | 0.03" | 0" |
| 1989 | 79°F | 58°F | 0" | 0" |
| 1988 | 80°F | 56°F | 0.2" | 0" |
| 1987 | 67°F | 52°F | 5.26" | 0" |
| 1986 | 89°F | 74°F | 0" | 0" |
| 1985 | 72°F | 61°F | 0.64" | 0" |
| 1984 | 85°F | 59°F | 0" | 0" |
| 1983 | 57°F | 38°F | 0" | 0" |
| 1982 | 61°F | 43°F | 1.57" | 0" |
| 1981 | 75°F | 46°F | 0" | 0" |
| 1980 | 87°F | 64°F | 1.02" | 0" |
| 1979 | 66°F | 52°F | 0" | 0" |
| 1978 | 70°F | 42°F | 0" | 0" |
| 1977 | 74°F | 53°F | 0" | 0" |
| 1976 | 74°F | 39°F | 0" | 0" |
| 1975 | 62°F | 49°F | 0" | 0" |
| 1974 | 65°F | 42°F | 0.13" | 0" |
| 1973 | 78°F | 67°F | 0" | 0" |
| 1972 | 67°F | 44°F | 0" | 0" |
| 1971 | 73°F | 41°F | 0" | 0" |