Weather on August 1 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
August 1st in Indiana Dunes National Park (via Gary, IN) typically brings warm summer weather, with average highs around 83°F and lows near 63°F. Over 55 years of records, the warmest August 1st was in 1988 (83°F average), while the coldest was 1976 (63°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 16% of August 1st dates historically, with the wettest August 1st recording 1.32" of rain. The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
Planning for August 1st in Indiana Dunes? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 77°F | 62°F | 0" | 0" |
| 2024 | 90°F | 69°F | 0" | 0" |
| 2023 | 79°F | 59°F | 0" | 0" |
| 2022 | 84°F | 70°F | 0" | 0" |
| 2021 | 74°F | 67°F | -- | -- |
| 2020 | 76°F | 64°F | -- | -- |
| 2019 | 72°F | 58°F | 0" | 0" |
| 2018 | 73°F | 61°F | 0.18" | -- |
| 2017 | 83°F | 63°F | 0" | 0" |
| 2016 | 77°F | 64°F | 0" | 0" |
| 2015 | 86°F | 60°F | 0" | 0" |
| 2014 | 82°F | 60°F | 0" | 0" |
| 2013 | 70°F | 60°F | 0.08" | 0" |
| 2012 | 78°F | 62°F | 0" | 0" |
| 2011 | 92°F | 66°F | 0" | 0" |
| 2010 | 74°F | 62°F | 0" | 0" |
| 2009 | 81°F | 59°F | 0" | 0" |
| 2008 | 86°F | 69°F | 0.25" | 0" |
| 2007 | 87°F | 66°F | 0" | 0" |
| 2006 | 94°F | 71°F | 0" | 0" |
| 2005 | 87°F | 65°F | 0" | 0" |
| 2004 | 82°F | 63°F | 0" | 0" |
| 2003 | 83°F | 69°F | 0" | 0" |
| 2002 | 93°F | 71°F | 0" | 0" |
| 2001 | 93°F | 72°F | 0" | 0" |
| 2000 | 71°F | 66°F | 1.32" | 0" |
| 1999 | 81°F | 61°F | 0" | 0" |
| 1998 | 84°F | 56°F | 0" | 0" |
| 1997 | 82°F | 60°F | -- | 0" |
| 1996 | 76°F | 56°F | -- | 0" |
| 1995 | 92°F | 72°F | 0" | 0" |
| 1994 | 83°F | 63°F | 0" | 0" |
| 1993 | 85°F | 66°F | 0" | 0" |
| 1992 | 76°F | 53°F | 0.05" | 0" |
| 1991 | 94°F | 64°F | 0" | 0" |
| 1990 | 75°F | 51°F | 0" | 0" |
| 1989 | 82°F | 64°F | 0" | 0" |
| 1988 | 102°F | 65°F | 0" | 0" |
| 1987 | 90°F | 72°F | 0.08" | 0" |
| 1986 | 88°F | 59°F | 0" | 0" |
| 1985 | 73°F | 60°F | 0" | 0" |
| 1984 | 89°F | 62°F | 0" | 0" |
| 1983 | 89°F | 62°F | 0" | 0" |
| 1982 | 84°F | 62°F | 0" | 0" |
| 1981 | 85°F | 56°F | 0" | 0" |
| 1980 | 94°F | -- | 0" | 0" |
| 1979 | 74°F | 65°F | 0.15" | 0" |
| 1978 | 80°F | 60°F | 0.84" | 0" |
| 1977 | 90°F | 59°F | 0" | 0" |
| 1976 | 72°F | 54°F | 0" | 0" |
| 1975 | 92°F | 68°F | 0" | 0" |
| 1974 | 80°F | 57°F | 0.3" | 0" |
| 1973 | 72°F | 62°F | 0" | 0" |
| 1972 | 83°F | 68°F | 0" | 0" |
| 1971 | 79°F | 56°F | 0" | 0" |