Weather on October 23 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
October 23rd in Indiana Dunes National Park (via Gary, IN) typically brings mild fall weather, with average highs around 61°F and lows near 42°F. Over 55 years of records, the warmest October 23rd was in 1975 (69°F average), while the coldest was 1976 (35°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 42% of October 23rd dates historically, with the wettest October 23rd recording 4.67" of rain. The last decade has been 6.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.6°F warmer on this date compared to 20-30 years ago.
Planning for October 23rd 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 | 56°F | 46°F | -- | -- |
| 2024 | 78°F | 56°F | 0.03" | 0" |
| 2023 | 56°F | 38°F | -- | 0" |
| 2022 | 80°F | 55°F | 0" | 0" |
| 2021 | 55°F | 37°F | -- | -- |
| 2020 | 78°F | 50°F | 0" | 0" |
| 2019 | 51°F | 38°F | 0.05" | 0" |
| 2018 | 61°F | 41°F | 0" | -- |
| 2017 | 74°F | 53°F | 4.67" | 0" |
| 2016 | 58°F | 45°F | 0" | 0" |
| 2015 | 60°F | 47°F | 0.03" | 0" |
| 2014 | 53°F | 37°F | 0" | 0" |
| 2013 | 43°F | 29°F | 0.18" | 0" |
| 2012 | 65°F | 55°F | 0.76" | 0" |
| 2011 | 63°F | 35°F | 0" | 0" |
| 2010 | 65°F | 44°F | 0" | 0" |
| 2009 | 56°F | 50°F | 4.67" | 0" |
| 2008 | 54°F | 37°F | 0" | 0" |
| 2007 | 64°F | 50°F | 1.35" | 0" |
| 2006 | 43°F | 34°F | 0" | 0" |
| 2005 | 53°F | 41°F | 0.05" | 0" |
| 2004 | 61°F | 47°F | 0.71" | 0" |
| 2003 | 54°F | 37°F | 0" | 0" |
| 2002 | 45°F | 40°F | 0" | 0" |
| 2001 | 67°F | 53°F | 1.47" | 0" |
| 2000 | 70°F | 55°F | 0.03" | 0" |
| 1999 | 46°F | 33°F | 0" | 0" |
| 1998 | 64°F | 34°F | 0" | 0" |
| 1997 | 52°F | 37°F | 0.53" | -- |
| 1996 | 46°F | 39°F | 0.18" | 0" |
| 1995 | 63°F | 35°F | 0" | 0" |
| 1994 | 71°F | 44°F | 0.03" | 0" |
| 1993 | 67°F | 34°F | 0" | 0" |
| 1992 | 78°F | 54°F | 0" | 0" |
| 1991 | 76°F | 57°F | 0" | 0" |
| 1990 | 60°F | 30°F | 0" | 0" |
| 1989 | 71°F | 53°F | 0" | 0" |
| 1988 | 52°F | 35°F | 1.27" | 0" |
| 1987 | 42°F | 28°F | 0" | 0" |
| 1986 | 72°F | 49°F | 0" | 0" |
| 1985 | 69°F | 49°F | 0" | 0" |
| 1984 | 53°F | 32°F | 0" | 0" |
| 1983 | 63°F | 51°F | 0.58" | 0" |
| 1982 | 55°F | 22°F | 0" | 0" |
| 1981 | 50°F | 27°F | 0" | 0" |
| 1980 | 65°F | 41°F | 0" | 0" |
| 1979 | 60°F | 37°F | 0.38" | 0" |
| 1978 | 75°F | 45°F | 0.89" | 0" |
| 1977 | 73°F | 45°F | 0.25" | 0" |
| 1976 | 46°F | 25°F | 0.1" | 0" |
| 1975 | 80°F | 57°F | 0" | 0" |
| 1974 | 69°F | 53°F | 0" | 0" |
| 1973 | 75°F | 39°F | 0" | 0" |
| 1972 | 58°F | 43°F | 0.71" | 0" |
| 1971 | 68°F | 57°F | 0.18" | 0" |