Weather on September 3 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
September 3rd in Indiana Dunes National Park (via Gary, IN) typically brings warm fall weather, with average highs around 80°F and lows near 60°F. Over 55 years of records, the warmest September 3rd was in 2011 (82°F average), while the coldest was 1974 (53°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 20% of September 3rd dates historically, with the wettest September 3rd recording 2.24" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for September 3rd in Indiana Dunes? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 80°F | 57°F | 0" | 0" |
| 2024 | 71°F | 53°F | 0" | 0" |
| 2023 | 85°F | 64°F | 0" | 0" |
| 2022 | 85°F | 64°F | 0" | 0" |
| 2021 | 76°F | 57°F | 0" | 0" |
| 2020 | 82°F | 63°F | 0" | 0" |
| 2019 | 80°F | 64°F | -- | -- |
| 2018 | 92°F | 71°F | -- | -- |
| 2017 | 71°F | 54°F | 0.3" | 0" |
| 2016 | 86°F | 67°F | 0" | 0" |
| 2015 | 89°F | 68°F | 0" | 0" |
| 2014 | 80°F | 60°F | 0" | 0" |
| 2013 | 74°F | 58°F | 0" | 0" |
| 2012 | 83°F | 67°F | 0" | 0" |
| 2011 | 95°F | 69°F | 0" | 0" |
| 2010 | 82°F | 61°F | 1.4" | 0" |
| 2009 | 71°F | 52°F | 0" | 0" |
| 2008 | 91°F | 69°F | 0" | 0" |
| 2007 | 85°F | 58°F | 0" | 0" |
| 2006 | 72°F | 57°F | 0" | 0" |
| 2005 | 78°F | 52°F | 0" | 0" |
| 2004 | 82°F | 65°F | 0.03" | 0" |
| 2003 | 70°F | 58°F | 0" | 0" |
| 2002 | 83°F | 67°F | 0.43" | 0" |
| 2001 | 80°F | 58°F | 0" | 0" |
| 2000 | 93°F | 69°F | 0" | 0" |
| 1999 | 92°F | 61°F | 0" | 0" |
| 1998 | 81°F | 54°F | 0" | 0" |
| 1997 | 65°F | 44°F | 0" | 0" |
| 1996 | 84°F | 60°F | 0.15" | 0" |
| 1995 | 80°F | 53°F | -- | 0" |
| 1994 | 69°F | 50°F | 0" | 0" |
| 1993 | 72°F | 53°F | 1.04" | 0" |
| 1992 | 77°F | 63°F | 2.24" | 0" |
| 1991 | 82°F | 68°F | 2.06" | 0" |
| 1990 | 81°F | 58°F | 0" | 0" |
| 1989 | 73°F | 52°F | 0" | 0" |
| 1988 | 84°F | 60°F | 0" | 0" |
| 1987 | 75°F | 44°F | 0" | 0" |
| 1986 | 83°F | 62°F | 0" | 0" |
| 1985 | 88°F | 70°F | 0" | 0" |
| 1984 | 72°F | 61°F | 0.46" | 0" |
| 1983 | 90°F | 59°F | 0" | 0" |
| 1982 | 75°F | 54°F | 0" | 0" |
| 1981 | 70°F | 65°F | 0" | 0" |
| 1980 | 83°F | 56°F | 0" | 0" |
| 1979 | 84°F | 63°F | 0" | 0" |
| 1978 | 85°F | 66°F | 0" | 0" |
| 1977 | 84°F | 61°F | 0" | 0" |
| 1976 | 83°F | 56°F | 0" | 0" |
| 1975 | 88°F | 60°F | 0" | 0" |
| 1974 | 63°F | 44°F | 0.66" | 0" |
| 1973 | 90°F | 67°F | 0" | 0" |
| 1972 | 67°F | 50°F | 0" | 0" |
| 1971 | 87°F | 71°F | 0.05" | 0" |