Weather on May 9 at Indiana Dunes
Indiana Dunes National Park
Based on 54 years of data from Gary, IN
Planning Your Visit
May 9th in Indiana Dunes National Park (via Gary, IN) typically brings pleasant spring weather, with average highs around 70°F and lows near 48°F. Over 54 years of records, the warmest May 9th was in 1979 (79°F average), while the coldest was 1983 (40°F) — a 39°F range across recorded history. Rain or other precipitation has occurred on about 37% of May 9th dates historically, with the wettest May 9th recording 7.24" of rain. The last decade has been 10.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 10.4°F cooler on this date compared to 20-30 years ago.
Planning for May 9th 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 | 65°F | 35°F | 0" | 0" |
| 2024 | 76°F | 53°F | 0.99" | 0" |
| 2023 | 57°F | 48°F | 0.1" | 0" |
| 2022 | 67°F | 50°F | -- | 0" |
| 2021 | 50°F | 37°F | -- | -- |
| 2020 | 58°F | 28°F | -- | -- |
| 2019 | 74°F | 52°F | 2.72" | 0" |
| 2018 | 77°F | -- | 0" | 0" |
| 2017 | 51°F | 41°F | 0.38" | 0" |
| 2016 | 70°F | 50°F | 0.08" | 0" |
| 2015 | 82°F | 51°F | 1.63" | 0" |
| 2014 | 89°F | 58°F | 1.12" | 0" |
| 2013 | 72°F | 48°F | 0" | 0" |
| 2012 | 67°F | 49°F | 0" | 0" |
| 2011 | 65°F | 54°F | 0" | 0" |
| 2010 | 49°F | 43°F | 0.08" | 0" |
| 2009 | 74°F | 54°F | 0" | 0" |
| 2008 | 52°F | 42°F | 0" | 0" |
| 2007 | 78°F | 61°F | 0.46" | 0" |
| 2006 | 74°F | 53°F | 0" | 0" |
| 2005 | 85°F | 63°F | 0" | 0" |
| 2004 | 86°F | 51°F | 0" | 0" |
| 2003 | 85°F | 56°F | -- | -- |
| 2002 | 65°F | 49°F | 4.42" | 0" |
| 2001 | 77°F | 53°F | 0.03" | 0" |
| 2000 | 87°F | 61°F | 0.64" | 0" |
| 1999 | 62°F | 41°F | 0" | 0" |
| 1997 | 51°F | 41°F | -- | 0" |
| 1996 | 78°F | 58°F | 7.24" | 0" |
| 1995 | 76°F | 51°F | 0.86" | 0" |
| 1994 | 67°F | 46°F | 0.03" | 0" |
| 1993 | 87°F | 60°F | 0" | 0" |
| 1992 | 65°F | 47°F | 0" | 0" |
| 1991 | 76°F | 49°F | 0" | 0" |
| 1990 | 81°F | 61°F | 0" | 0" |
| 1989 | 59°F | 46°F | 0.33" | 0" |
| 1988 | 77°F | 43°F | 0.84" | 0" |
| 1987 | 85°F | 49°F | 0" | 0" |
| 1986 | 74°F | 43°F | 0" | 0" |
| 1985 | 83°F | 54°F | 0" | 0" |
| 1984 | 52°F | 42°F | 0.05" | 0" |
| 1983 | 51°F | 29°F | 0" | 0" |
| 1982 | 79°F | 43°F | 0" | 0" |
| 1981 | 70°F | 45°F | 0" | 0" |
| 1980 | 61°F | 30°F | 0" | 0" |
| 1979 | 89°F | 68°F | 0" | 0" |
| 1978 | 70°F | 46°F | 0.25" | 0" |
| 1977 | 53°F | 30°F | 0" | 0" |
| 1976 | 74°F | 47°F | 0" | 0" |
| 1975 | 71°F | 44°F | 0" | 0" |
| 1974 | 47°F | 40°F | 0" | 0" |
| 1973 | 72°F | 50°F | 0" | 0" |
| 1972 | 51°F | 40°F | 1.02" | 0" |
| 1971 | 70°F | 46°F | 0" | 0" |