Weather on September 4 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
September 4th in Indiana Dunes National Park (via Gary, IN) typically brings warm fall weather, with average highs around 81°F and lows near 59°F. Over 55 years of records, the warmest September 4th was in 1973 (79°F average), while the coldest was 1974 (54°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 29% of September 4th dates historically, with the wettest September 4th recording 4.32" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for September 4th in Indiana Dunes? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 61°F | 0.18" | 0" |
| 2024 | 76°F | 53°F | 0" | 0" |
| 2023 | 90°F | 68°F | 0" | 0" |
| 2022 | 86°F | 70°F | -- | 0" |
| 2021 | 75°F | 66°F | -- | -- |
| 2020 | 87°F | 58°F | 0" | 0" |
| 2019 | 80°F | 63°F | 0.51" | 0" |
| 2018 | 90°F | 56°F | -- | -- |
| 2017 | 82°F | 63°F | 0" | 0" |
| 2016 | 88°F | 68°F | 0" | 0" |
| 2015 | 89°F | 65°F | 0" | 0" |
| 2014 | 83°F | 68°F | 0.05" | 0" |
| 2013 | 73°F | 53°F | 0" | 0" |
| 2012 | 81°F | 68°F | 0.36" | 0" |
| 2011 | 89°F | 67°F | 1.02" | 0" |
| 2010 | 71°F | 56°F | 0.03" | 0" |
| 2009 | 74°F | 54°F | 0" | 0" |
| 2008 | 73°F | 63°F | 4.32" | 0" |
| 2007 | 86°F | 63°F | 0" | 0" |
| 2006 | 77°F | 58°F | 0" | 0" |
| 2005 | 76°F | 52°F | 0" | 0" |
| 2004 | 82°F | 64°F | 0" | 0" |
| 2003 | 78°F | 64°F | 0" | 0" |
| 2002 | 78°F | 56°F | 0" | 0" |
| 2001 | 84°F | 66°F | 0.05" | 0" |
| 2000 | 86°F | 67°F | 0" | 0" |
| 1999 | 94°F | 61°F | 0" | 0" |
| 1998 | 84°F | 54°F | 0" | 0" |
| 1997 | 68°F | 45°F | 0" | 0" |
| 1996 | 82°F | 60°F | 0" | 0" |
| 1995 | 82°F | 54°F | -- | 0" |
| 1994 | 68°F | 49°F | 0" | 0" |
| 1993 | 73°F | 54°F | 0.05" | 0" |
| 1992 | 78°F | 50°F | 0" | 0" |
| 1991 | 74°F | 63°F | 0" | 0" |
| 1990 | 90°F | 63°F | 0" | 0" |
| 1989 | 77°F | 51°F | 0" | 0" |
| 1988 | 80°F | 59°F | 1.57" | 0" |
| 1987 | 86°F | 46°F | 0" | 0" |
| 1986 | 84°F | 66°F | 0.08" | 0" |
| 1985 | 86°F | 72°F | 0" | 0" |
| 1984 | 72°F | 52°F | 0.1" | 0" |
| 1983 | 92°F | 62°F | 0" | 0" |
| 1982 | 79°F | 46°F | 0" | 0" |
| 1981 | 72°F | 62°F | 0.48" | 0" |
| 1980 | 83°F | 55°F | 0" | 0" |
| 1979 | 78°F | 59°F | 0" | 0" |
| 1978 | 85°F | 54°F | 0" | 0" |
| 1977 | 87°F | 61°F | 0" | 0" |
| 1976 | 84°F | 64°F | 0" | 0" |
| 1975 | 86°F | 57°F | 0" | 0" |
| 1974 | 66°F | 43°F | 0.05" | 0" |
| 1973 | 88°F | 70°F | 0.1" | 0" |
| 1972 | 69°F | 46°F | 0" | 0" |
| 1971 | 85°F | 71°F | 1.45" | 0" |