Weather on March 20 at Indiana Dunes
Indiana Dunes National Park
Based on 56 years of data from Gary, IN
Planning Your Visit
March 20th in Indiana Dunes National Park (via Gary, IN) typically brings chilly spring weather, with average highs around 49°F and lows near 31°F. Over 56 years of records, the warmest March 20th was in 2012 (71°F average), while the coldest was 1986 (24°F) — a 47°F range across recorded history. Precipitation has occurred on 34% of recorded March 20th dates, with snow falling 5% of the time (heaviest snowfall: 1.5"). The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
Planning for March 20th in Indiana Dunes? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 70°F | 41°F | -- | -- |
| 2025 | 65°F | 36°F | 1.83" | 0.4" |
| 2024 | 57°F | 30°F | 0" | 0" |
| 2023 | 40°F | 18°F | 0" | 0" |
| 2022 | 40°F | 29°F | -- | 0" |
| 2021 | 60°F | 25°F | -- | -- |
| 2020 | 63°F | 38°F | 0.51" | 0" |
| 2019 | 50°F | 32°F | 0.1" | 0" |
| 2018 | 51°F | 25°F | 0" | 0" |
| 2017 | 51°F | 40°F | 0.74" | 0" |
| 2016 | 44°F | 27°F | 0" | 0" |
| 2015 | 49°F | 35°F | 0" | 0" |
| 2014 | 45°F | 30°F | 0.2" | 0" |
| 2013 | 35°F | 18°F | 0" | 0" |
| 2012 | 77°F | 64°F | 0.03" | 0" |
| 2011 | 46°F | 35°F | 0" | 0" |
| 2010 | 65°F | 34°F | 0" | 0" |
| 2009 | 39°F | 22°F | 0" | 0" |
| 2008 | 38°F | 28°F | 0" | 0" |
| 2007 | 60°F | 31°F | 0" | 0" |
| 2006 | 37°F | 24°F | 0" | 0" |
| 2005 | 52°F | 32°F | 0.03" | 0" |
| 2004 | 53°F | 32°F | 0" | 0" |
| 2003 | 57°F | 45°F | 0.08" | 0" |
| 2002 | 49°F | 36°F | 0" | 0" |
| 2001 | 47°F | 30°F | 0" | 0" |
| 2000 | 50°F | 39°F | 0.97" | 0" |
| 1999 | 44°F | 24°F | 0" | 0" |
| 1998 | 34°F | 30°F | 0" | 0" |
| 1997 | 51°F | 24°F | 0" | 0" |
| 1996 | 30°F | 25°F | -- | -- |
| 1995 | 61°F | 43°F | 0.41" | 0" |
| 1994 | 49°F | 29°F | 0" | 0" |
| 1993 | 36°F | 26°F | 0.64" | 1" |
| 1992 | 41°F | 26°F | 0" | 0" |
| 1991 | 59°F | 33°F | 0" | 0" |
| 1990 | 45°F | 21°F | 0" | 0" |
| 1989 | 37°F | 32°F | 0.33" | 0" |
| 1988 | 41°F | 16°F | 0" | -- |
| 1987 | 55°F | 22°F | 0" | 0" |
| 1986 | 33°F | 16°F | 0.08" | 0" |
| 1985 | 58°F | 28°F | 0" | 0" |
| 1984 | 43°F | 32°F | 2.06" | 0" |
| 1983 | 34°F | 29°F | 0.38" | 1.5" |
| 1982 | 43°F | 34°F | 0.58" | 0" |
| 1981 | 43°F | 20°F | 0" | 0" |
| 1980 | 54°F | 35°F | 0" | -- |
| 1979 | 61°F | 40°F | 0" | 0" |
| 1978 | 49°F | 25°F | 0" | 0" |
| 1977 | 42°F | 32°F | 0.36" | 0" |
| 1976 | 71°F | 55°F | 0.56" | 0" |
| 1975 | 56°F | 37°F | 0" | 0" |
| 1974 | 42°F | 20°F | 0" | 0" |
| 1973 | 43°F | 26°F | 0" | 0" |
| 1972 | 70°F | 39°F | 0" | 0" |
| 1971 | 39°F | 28°F | 0.03" | 0" |