Weather on August 9 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
August 9th in Indiana Dunes National Park (via Gary, IN) typically brings warm summer weather, with average highs around 83°F and lows near 64°F. Over 55 years of records, the warmest August 9th was in 1988 (87°F average), while the coldest was 1972 (63°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 33% of August 9th dates historically, with the wettest August 9th recording 5.64" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 9th 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 | 93°F | 69°F | 0" | 0" |
| 2024 | 80°F | 66°F | 0" | 0" |
| 2023 | 83°F | 62°F | 0" | 0" |
| 2022 | 83°F | 65°F | 0.79" | 0" |
| 2021 | 82°F | 72°F | -- | -- |
| 2020 | 89°F | 68°F | -- | -- |
| 2019 | 80°F | 60°F | 0" | 0" |
| 2018 | 76°F | 61°F | 0" | -- |
| 2017 | 78°F | 58°F | 0" | 0" |
| 2016 | 85°F | 66°F | 0" | 0" |
| 2015 | 83°F | 65°F | 0" | 0" |
| 2014 | 83°F | 65°F | 0" | 0" |
| 2013 | 75°F | 59°F | 0" | 0" |
| 2012 | 78°F | 64°F | 0.13" | 0" |
| 2011 | 79°F | 65°F | 0.81" | 0" |
| 2010 | 86°F | 72°F | 0.03" | 0" |
| 2009 | 89°F | 69°F | 0" | 0" |
| 2008 | 74°F | 57°F | 0" | 0" |
| 2007 | 83°F | 71°F | 0.89" | 0" |
| 2006 | 74°F | 66°F | 0" | 0" |
| 2005 | 86°F | 68°F | 0" | 0" |
| 2004 | 78°F | 62°F | 0" | 0" |
| 2003 | 75°F | 66°F | 0" | 0" |
| 2002 | 77°F | 57°F | 0" | 0" |
| 2001 | 94°F | 74°F | 0" | 0" |
| 2000 | 83°F | 72°F | 0" | 0" |
| 1999 | 75°F | 63°F | 0.08" | 0" |
| 1998 | 82°F | 71°F | 0.03" | 0" |
| 1997 | 77°F | 65°F | 0" | 0" |
| 1996 | 79°F | 59°F | 0.03" | 0" |
| 1995 | 85°F | 67°F | 0" | 0" |
| 1994 | 85°F | 57°F | 0" | 0" |
| 1993 | 79°F | 57°F | 0.15" | 0" |
| 1992 | 81°F | 67°F | 0" | 0" |
| 1991 | 75°F | 62°F | 0.05" | 0" |
| 1990 | 80°F | 55°F | 0" | 0" |
| 1989 | 79°F | 61°F | 4.75" | 0" |
| 1988 | 96°F | 79°F | 5.64" | 0" |
| 1987 | -- | 70°F | 0.1" | 0" |
| 1986 | 86°F | 55°F | 0" | 0" |
| 1985 | 88°F | 57°F | 0" | 0" |
| 1984 | 94°F | 66°F | 0" | 0" |
| 1983 | 95°F | 67°F | 0" | 0" |
| 1982 | 85°F | 66°F | 0" | 0" |
| 1981 | 84°F | 61°F | 0" | 0" |
| 1980 | 92°F | 70°F | 1.7" | 0" |
| 1979 | 89°F | 68°F | 2.49" | 0" |
| 1978 | 86°F | 67°F | 0" | 0" |
| 1977 | 79°F | 65°F | 0.08" | 0" |
| 1976 | 81°F | 48°F | 0" | 0" |
| 1975 | 89°F | 58°F | 0" | 0" |
| 1974 | 82°F | 61°F | 0" | 0" |
| 1973 | 91°F | 70°F | 0.76" | 0" |
| 1972 | 72°F | 55°F | 0" | 0" |
| 1971 | 91°F | 67°F | 0.13" | 0" |