Weather on July 4 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
July 4th in Indiana Dunes National Park (via Gary, IN) typically brings warm summer weather, with average highs around 82°F and lows near 63°F. Over 55 years of records, the warmest July 4th was in 1990 (88°F average), while the coldest was 1997 (56°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 24% of July 4th dates historically, with the wettest July 4th recording 1.73" of rain. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for July 4th in Indiana Dunes? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 90°F | 72°F | 0" | 0" |
| 2024 | 87°F | 64°F | 0" | 0" |
| 2023 | 78°F | 62°F | 0" | 0" |
| 2022 | 83°F | 64°F | -- | 0" |
| 2021 | 89°F | 66°F | -- | -- |
| 2020 | 84°F | 68°F | -- | -- |
| 2019 | 89°F | 68°F | -- | -- |
| 2018 | 90°F | 72°F | -- | -- |
| 2017 | 77°F | 65°F | 0" | 0" |
| 2016 | 76°F | 62°F | 0" | 0" |
| 2015 | 73°F | 54°F | 0" | 0" |
| 2014 | 70°F | 50°F | 0" | 0" |
| 2013 | 74°F | 56°F | 0.08" | 0" |
| 2012 | 93°F | 76°F | 0" | 0" |
| 2011 | 74°F | 64°F | 0" | 0" |
| 2010 | 85°F | 65°F | 0" | 0" |
| 2009 | 74°F | 59°F | 0" | 0" |
| 2008 | 66°F | 55°F | 0" | 0" |
| 2007 | 84°F | 57°F | 1.07" | 0" |
| 2006 | 81°F | 69°F | 0.08" | 0" |
| 2005 | 85°F | 65°F | 0" | 0" |
| 2004 | 86°F | 71°F | 1.73" | 0" |
| 2003 | 90°F | 75°F | 0" | 0" |
| 2002 | 88°F | 67°F | 0" | 0" |
| 2001 | 77°F | 65°F | 0.99" | 0" |
| 2000 | 72°F | 65°F | 0.18" | 0" |
| 1999 | 90°F | 75°F | 0" | 0" |
| 1998 | 71°F | 59°F | 0" | 0" |
| 1997 | 63°F | 50°F | -- | 0" |
| 1996 | 65°F | 49°F | 0" | 0" |
| 1995 | 82°F | 69°F | 0.61" | 0" |
| 1994 | 83°F | 58°F | 0" | 0" |
| 1993 | 90°F | 65°F | 0" | 0" |
| 1992 | 83°F | 54°F | 0" | 0" |
| 1991 | 90°F | 64°F | 0" | 0" |
| 1990 | 98°F | 78°F | 0" | 0" |
| 1989 | 82°F | 64°F | 0" | 0" |
| 1988 | 89°F | 58°F | 0" | 0" |
| 1987 | 83°F | 58°F | 0" | 0" |
| 1986 | 88°F | 61°F | 0" | 0" |
| 1985 | 85°F | 60°F | 1.09" | 0" |
| 1984 | 86°F | 63°F | 0" | 0" |
| 1983 | 86°F | 70°F | 0.1" | 0" |
| 1982 | 80°F | 64°F | 0" | 0" |
| 1981 | 83°F | 63°F | 0.28" | 0" |
| 1980 | 85°F | -- | 0" | 0" |
| 1979 | 74°F | 60°F | 0.61" | 0" |
| 1978 | 78°F | 55°F | 0" | 0" |
| 1977 | 96°F | 75°F | 0" | 0" |
| 1976 | 76°F | 55°F | 0" | 0" |
| 1975 | 86°F | 68°F | 0" | 0" |
| 1974 | 95°F | 69°F | 0.86" | 0" |
| 1973 | 79°F | 65°F | 1.22" | 0" |
| 1972 | 68°F | 50°F | 0" | 0" |
| 1971 | 90°F | 58°F | 0" | 0" |