Weather on April 18 at Indiana Dunes
Indiana Dunes National Park
INMidwest600 ft elevation
Avg High63°F
Avg Low41°F
Warmest198575°F
Coldest198328°F
Based on 55 years of data from Gary, IN
Planning Your Visit
April 18th in Indiana Dunes National Park (via Gary, IN) typically brings mild spring weather, with average highs around 63°F and lows near 41°F. Over 55 years of records, the warmest April 18th was in 1985 (75°F average), while the coldest was 1983 (28°F) — a 47°F range across recorded history. Precipitation has occurred on 33% of recorded April 18th dates, with snow falling 2% of the time. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
Planning for April 18th 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 | 51°F | 0.05" | 0" |
| 2024 | 71°F | 43°F | 0.08" | 0" |
| 2023 | 40°F | 31°F | 0" | 0" |
| 2022 | 40°F | 31°F | 0.2" | 0.2" |
| 2021 | 64°F | 30°F | -- | -- |
| 2020 | 58°F | 31°F | -- | -- |
| 2019 | 75°F | 55°F | 0.38" | 0" |
| 2018 | 38°F | 25°F | 0" | 0" |
| 2017 | 68°F | 39°F | 0" | 0" |
| 2016 | 79°F | 53°F | 0" | 0" |
| 2015 | 77°F | 56°F | 0" | 0" |
| 2014 | 63°F | 39°F | 0" | 0" |
| 2013 | 60°F | 45°F | 3.07" | 0" |
| 2012 | 50°F | 39°F | 0" | 0" |
| 2011 | 51°F | 32°F | 1.07" | 0" |
| 2010 | 52°F | 38°F | 0" | 0" |
| 2009 | 66°F | 42°F | 0" | 0" |
| 2008 | 76°F | 55°F | 0" | 0" |
| 2007 | 70°F | 38°F | 0" | 0" |
| 2006 | 50°F | 40°F | 0" | 0" |
| 2005 | 78°F | 43°F | 0" | 0" |
| 2004 | 75°F | 51°F | 0" | 0" |
| 2003 | 59°F | 38°F | 0.03" | 0" |
| 2002 | 82°F | 66°F | 0" | 0" |
| 2001 | 38°F | 26°F | 0" | 0" |
| 2000 | 45°F | 39°F | 0" | 0" |
| 1999 | 47°F | 32°F | 0.94" | 0" |
| 1998 | 54°F | 34°F | 0" | 0" |
| 1997 | 55°F | 37°F | -- | -- |
| 1996 | 76°F | 52°F | 2.03" | 0" |
| 1995 | 57°F | 42°F | 1.3" | 0" |
| 1994 | 66°F | 47°F | 0" | 0" |
| 1993 | 63°F | 42°F | 0" | 0" |
| 1992 | 67°F | 40°F | 0.28" | 0" |
| 1991 | 60°F | 35°F | 0" | 0" |
| 1990 | 55°F | 27°F | 0" | 0" |
| 1989 | 45°F | 35°F | 0.58" | 0" |
| 1988 | 74°F | 24°F | 0.13" | 0" |
| 1987 | 77°F | 40°F | 0" | 0" |
| 1986 | 71°F | 32°F | 0" | 0" |
| 1985 | 85°F | 65°F | 0" | 0" |
| 1984 | 46°F | 30°F | 0.23" | 0" |
| 1983 | 35°F | 21°F | 0" | 0" |
| 1982 | 65°F | 35°F | -- | -- |
| 1981 | 80°F | 45°F | 0" | 0" |
| 1980 | 67°F | 29°F | 0" | 0" |
| 1979 | 57°F | 30°F | 0" | 0" |
| 1978 | 62°F | 41°F | 1.65" | 0" |
| 1977 | 87°F | 58°F | 0.76" | 0" |
| 1976 | 82°F | 59°F | 0" | 0" |
| 1975 | 72°F | 61°F | 2.18" | 0" |
| 1974 | 65°F | 43°F | 0" | 0" |
| 1973 | 67°F | 49°F | 0.08" | 0" |
| 1972 | 74°F | 50°F | 0" | 0" |
| 1971 | 66°F | 35°F | 0" | 0" |
April 18 at Nearby Parks
Holiday Weather at Indiana Dunes
Official NPS WebsiteVisit nps.gov/indu for park information, alerts, and reservations
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