Weather on September 19 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
September 19th in Indiana Dunes National Park (via Gary, IN) typically brings pleasant fall weather, with average highs around 77°F and lows near 55°F. Over 55 years of records, the warmest September 19th was in 1978 (78°F average), while the coldest was 1991 (47°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 19th dates historically, with the wettest September 19th recording 3.96" 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 September 19th in Indiana Dunes? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 84°F | 65°F | 0" | 0" |
| 2024 | 82°F | 60°F | 0" | 0" |
| 2023 | 67°F | 51°F | 0.15" | 0" |
| 2022 | 85°F | 65°F | 1.27" | 0" |
| 2021 | 88°F | 66°F | -- | -- |
| 2020 | 63°F | 42°F | -- | -- |
| 2019 | 83°F | 61°F | 0" | 0" |
| 2018 | 75°F | 62°F | 0" | -- |
| 2017 | 72°F | 62°F | 3.96" | 0" |
| 2016 | 75°F | 57°F | 0" | 0" |
| 2015 | 80°F | 59°F | 2.95" | 0" |
| 2014 | 68°F | 45°F | 0" | 0" |
| 2013 | 80°F | 60°F | 3.07" | 0" |
| 2012 | 60°F | 39°F | 0" | 0" |
| 2011 | 65°F | 55°F | 1.98" | 0" |
| 2010 | 69°F | 55°F | 0.51" | 0" |
| 2009 | 73°F | 57°F | 0" | 0" |
| 2008 | 74°F | 56°F | 0" | 0" |
| 2007 | 88°F | 67°F | 0" | 0" |
| 2006 | 70°F | 46°F | 0" | 0" |
| 2005 | 81°F | 57°F | 0.15" | 0" |
| 2004 | 75°F | 56°F | 0" | 0" |
| 2003 | 82°F | 57°F | 0" | 0" |
| 2002 | 81°F | 64°F | 0.08" | 0" |
| 2001 | 72°F | 57°F | 0" | 0" |
| 2000 | 85°F | 60°F | 0" | 0" |
| 1999 | 82°F | 50°F | 0" | 0" |
| 1998 | 79°F | 61°F | 0" | 0" |
| 1997 | 83°F | 57°F | 2.34" | 0" |
| 1996 | 73°F | 45°F | 0" | 0" |
| 1995 | 62°F | 56°F | -- | 0" |
| 1994 | 82°F | 50°F | 0" | 0" |
| 1993 | 68°F | 47°F | 0" | 0" |
| 1992 | 79°F | 49°F | 0" | 0" |
| 1991 | 58°F | 36°F | 0" | 0" |
| 1990 | 63°F | 55°F | 0.2" | 0" |
| 1989 | 77°F | 50°F | 0" | 0" |
| 1988 | 85°F | 66°F | 2.59" | 0" |
| 1987 | 74°F | 48°F | 0.1" | 0" |
| 1986 | 74°F | 54°F | 0.25" | 0" |
| 1985 | 88°F | 62°F | 0" | 0" |
| 1984 | 86°F | 54°F | 0" | 0" |
| 1983 | 88°F | 64°F | 2.62" | 0" |
| 1982 | 70°F | 43°F | 0" | 0" |
| 1981 | 75°F | 45°F | 0" | 0" |
| 1980 | 80°F | 53°F | 0" | 0" |
| 1979 | 79°F | 47°F | 0" | 0" |
| 1978 | 92°F | 64°F | 0" | 0" |
| 1977 | 80°F | 65°F | 0" | 0" |
| 1976 | 82°F | 49°F | 0" | 0" |
| 1975 | 77°F | 57°F | 1.73" | 0" |
| 1974 | 83°F | 55°F | 0" | 0" |
| 1973 | 68°F | 42°F | 0" | 0" |
| 1972 | 80°F | 64°F | 0.05" | 0" |
| 1971 | 65°F | 50°F | 1.04" | 0" |