Weather on June 15 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
June 15th in Indiana Dunes National Park (via Gary, IN) typically brings warm summer weather, with average highs around 80°F and lows near 60°F. Over 55 years of records, the warmest June 15th was in 2022 (86°F average), while the coldest was 1999 (58°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 40% of June 15th dates historically, with the wettest June 15th recording 3.89" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for June 15th in Indiana Dunes? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 56°F | 0" | 0" |
| 2024 | 80°F | 56°F | 0" | 0" |
| 2023 | 67°F | 53°F | 0" | 0" |
| 2022 | 96°F | 75°F | 0" | 0" |
| 2021 | 72°F | 56°F | 0" | 0" |
| 2020 | 69°F | 52°F | -- | -- |
| 2019 | 68°F | 59°F | -- | -- |
| 2018 | 78°F | 61°F | 0" | -- |
| 2017 | 90°F | 66°F | 0.38" | 0" |
| 2016 | 83°F | 67°F | 1.14" | 0" |
| 2015 | 85°F | 71°F | 1.63" | 0" |
| 2014 | 79°F | 56°F | 0" | 0" |
| 2013 | 68°F | 55°F | 0" | 0" |
| 2012 | 90°F | 53°F | 0" | 0" |
| 2011 | 76°F | 55°F | 0.53" | 0" |
| 2010 | 71°F | 60°F | 0.05" | 0" |
| 2009 | 71°F | 51°F | 0" | 0" |
| 2008 | 84°F | 60°F | 0.05" | 0" |
| 2007 | 85°F | 61°F | 0" | 0" |
| 2006 | 72°F | 57°F | 0" | 0" |
| 2005 | 79°F | 66°F | 0" | 0" |
| 2004 | 83°F | 62°F | 0.81" | 0" |
| 2003 | 65°F | 51°F | -- | -- |
| 2002 | 65°F | 55°F | 0.51" | 0" |
| 2001 | 91°F | 69°F | 0" | 0" |
| 2000 | 80°F | 63°F | 2.11" | 0" |
| 1999 | 62°F | 53°F | 0" | 0" |
| 1998 | 78°F | 56°F | 0" | 0" |
| 1997 | 80°F | 62°F | 3.51" | 0" |
| 1996 | 69°F | 53°F | 0" | 0" |
| 1995 | 87°F | 58°F | -- | 0" |
| 1994 | 90°F | 69°F | 0.05" | 0" |
| 1993 | 80°F | 53°F | 0" | 0" |
| 1992 | 82°F | 61°F | 0" | 0" |
| 1991 | 91°F | 66°F | 0.13" | 0" |
| 1990 | 93°F | 55°F | 0" | 0" |
| 1989 | 74°F | 52°F | 0" | 0" |
| 1988 | 94°F | 64°F | 0" | 0" |
| 1987 | 99°F | 68°F | 0" | 0" |
| 1986 | 83°F | 52°F | 2.26" | 0" |
| 1985 | 77°F | 57°F | 2.01" | 0" |
| 1984 | 72°F | 48°F | 0" | 0" |
| 1983 | 88°F | 64°F | 0.71" | 0" |
| 1982 | 82°F | 61°F | 0.53" | 0" |
| 1981 | 88°F | 75°F | 0" | 0" |
| 1980 | 87°F | 54°F | 1.37" | 0" |
| 1979 | 90°F | 69°F | 0" | 0" |
| 1978 | 75°F | 61°F | 0" | 0" |
| 1977 | 80°F | 49°F | 0" | 0" |
| 1976 | 92°F | 72°F | 0.2" | 0" |
| 1975 | 68°F | 61°F | 3.89" | 0" |
| 1974 | 78°F | 62°F | 0.08" | 0" |
| 1973 | 84°F | 60°F | 0.08" | 0" |
| 1972 | 80°F | 56°F | 2.06" | 0" |
| 1971 | 77°F | 56°F | 0" | 0" |