Weather on May 1 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
May 1st in Indiana Dunes National Park (via Gary, IN) typically brings mild spring weather, with average highs around 65°F and lows near 45°F. Over 55 years of records, the warmest May 1st was in 2001 (75°F average), while the coldest was 1978 (38°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 38% of May 1st dates historically, with the wettest May 1st recording 5.82" 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 May 1st 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 | 69°F | 56°F | 0.3" | 0" |
| 2024 | 74°F | 57°F | 0" | 0" |
| 2023 | 49°F | 39°F | 0.84" | 0" |
| 2022 | 70°F | 51°F | -- | 0" |
| 2021 | 81°F | 34°F | -- | -- |
| 2020 | 48°F | 35°F | 0" | 0" |
| 2019 | 55°F | 42°F | 5.82" | 0" |
| 2018 | 77°F | 54°F | 0" | 0" |
| 2017 | 64°F | 46°F | 1.8" | 0" |
| 2016 | 48°F | 45°F | -- | 0" |
| 2015 | 47°F | 37°F | 0" | 0" |
| 2014 | 56°F | 39°F | 0.13" | 0" |
| 2013 | 84°F | 60°F | 0" | 0" |
| 2012 | 60°F | 49°F | 1.02" | 0" |
| 2011 | 72°F | 50°F | 0" | 0" |
| 2010 | 80°F | 64°F | 0.03" | 0" |
| 2009 | 72°F | 50°F | 0.51" | 0" |
| 2008 | 61°F | 41°F | 0" | 0" |
| 2007 | 77°F | 53°F | 0" | 0" |
| 2006 | 60°F | 54°F | 0.84" | 0" |
| 2005 | 54°F | 34°F | 0.05" | 0" |
| 2004 | 63°F | 40°F | 1.93" | 0" |
| 2003 | 57°F | 42°F | -- | -- |
| 2002 | 58°F | 46°F | 0" | 0" |
| 2001 | 88°F | 63°F | 0" | 0" |
| 2000 | 66°F | 50°F | 0.08" | 0" |
| 1999 | 77°F | 38°F | 0" | 0" |
| 1998 | 65°F | 47°F | 0.86" | 0" |
| 1997 | 61°F | 38°F | -- | 0" |
| 1996 | 61°F | 36°F | -- | 0" |
| 1995 | 53°F | 42°F | -- | 0" |
| 1994 | 51°F | 35°F | 0.64" | 0" |
| 1993 | 75°F | 48°F | 0" | 0" |
| 1992 | 86°F | 45°F | 0" | 0" |
| 1991 | 68°F | 46°F | 1.27" | 0" |
| 1990 | 60°F | 40°F | 0" | 0" |
| 1989 | 66°F | 39°F | 0" | 0" |
| 1988 | 68°F | 33°F | 0" | 0" |
| 1987 | 74°F | 38°F | 0" | 0" |
| 1986 | 65°F | 46°F | 0.38" | 0" |
| 1985 | 74°F | 44°F | 0.03" | 0" |
| 1984 | 60°F | -- | 0" | 0" |
| 1983 | 57°F | 38°F | 0.81" | 0" |
| 1982 | 64°F | 45°F | 0" | 0" |
| 1981 | 59°F | 39°F | 0" | 0" |
| 1980 | 62°F | 37°F | 0" | 0" |
| 1979 | 58°F | 29°F | 0" | 0" |
| 1978 | 45°F | 31°F | 0" | 0" |
| 1977 | 78°F | 47°F | 0" | 0" |
| 1976 | 64°F | 47°F | 0" | 0" |
| 1975 | 68°F | 45°F | 0.18" | 0" |
| 1974 | 62°F | 44°F | 0" | 0" |
| 1973 | 72°F | 60°F | 1.07" | 0" |
| 1972 | 73°F | 55°F | 0.74" | 0" |
| 1971 | 64°F | 47°F | 0" | 0" |