Weather on January 21 at Indiana Dunes
Indiana Dunes National Park
Based on 56 years of data from Gary, IN
Planning Your Visit
January 21st in Indiana Dunes National Park (via Gary, IN) typically brings very cold winter weather, with average highs around 30°F and lows near 15°F. Over 56 years of records, the warmest January 21st was in 1974 (44°F average), while the coldest was 1984 (-6°F) — a 50°F range across recorded history. Precipitation has occurred on 32% of recorded January 21st dates, with snow falling 21% of the time (heaviest snowfall: 6"). The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for January 21st in Indiana Dunes? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 35°F | 8°F | 0.08" | 0.4" |
| 2025 | 17°F | -3°F | 0" | 0" |
| 2024 | 20°F | -11°F | 0" | 0.1" |
| 2023 | 33°F | 26°F | 0" | 0" |
| 2022 | 19°F | 13°F | 0.03" | 0" |
| 2021 | 35°F | 14°F | 0" | 0" |
| 2020 | 35°F | 14°F | -- | -- |
| 2019 | 15°F | 4°F | -- | -- |
| 2018 | 47°F | 35°F | -- | -- |
| 2017 | 50°F | 37°F | 0" | 0" |
| 2016 | 21°F | 8°F | 0" | 0" |
| 2015 | 43°F | 22°F | 0" | 0" |
| 2014 | 36°F | 11°F | 0" | 0" |
| 2013 | 20°F | 11°F | 0" | 0" |
| 2012 | 17°F | 12°F | 1.57" | 6" |
| 2011 | 23°F | 4°F | 0" | 0" |
| 2010 | 34°F | 22°F | 0" | 0" |
| 2009 | 23°F | 6°F | 0.18" | 3" |
| 2008 | 14°F | -1°F | -- | -- |
| 2007 | 28°F | 18°F | -- | -- |
| 2006 | 37°F | 23°F | 1.02" | 2.3" |
| 2005 | 24°F | 9°F | 0.28" | 3" |
| 2004 | 21°F | 6°F | 0.05" | 1.2" |
| 2003 | 19°F | 15°F | 0" | 0" |
| 2002 | 37°F | 24°F | 0.05" | 1" |
| 2001 | 22°F | 8°F | 0" | 0" |
| 2000 | 14°F | -6°F | 0.13" | 0.1" |
| 1999 | 50°F | 34°F | 1.88" | 0" |
| 1998 | 31°F | 28°F | 0" | 0" |
| 1997 | 44°F | 28°F | 3.68" | -- |
| 1996 | 33°F | 24°F | -- | -- |
| 1995 | 24°F | 18°F | -- | -- |
| 1994 | 13°F | -6°F | 0" | 0" |
| 1993 | 38°F | 34°F | 1.55" | 0" |
| 1992 | 42°F | 20°F | 0" | 0" |
| 1991 | 29°F | 12°F | 0.69" | 0" |
| 1990 | 35°F | 30°F | 0" | 0" |
| 1989 | 36°F | 19°F | 0" | 0" |
| 1988 | 36°F | 23°F | 0" | 0" |
| 1987 | 30°F | 10°F | 0" | 0" |
| 1986 | 53°F | 25°F | 0" | 0" |
| 1985 | 17°F | -12°F | 0" | 0" |
| 1984 | 7°F | -19°F | 0" | 0" |
| 1983 | 37°F | 16°F | 0" | 0" |
| 1982 | 28°F | 22°F | 0.51" | 1.5" |
| 1981 | 35°F | 25°F | 0" | 0" |
| 1980 | -- | 16°F | 0" | 0" |
| 1979 | 33°F | 21°F | 0" | 0" |
| 1978 | 24°F | 6°F | 0.13" | 0.5" |
| 1977 | 28°F | 1°F | 0" | 0" |
| 1976 | 25°F | 9°F | 0.48" | 1.5" |
| 1975 | 35°F | 20°F | 0" | 0" |
| 1974 | 53°F | 35°F | 1.63" | 0" |
| 1973 | 34°F | 24°F | 0" | 0" |
| 1972 | 34°F | 23°F | 0" | 0" |
| 1971 | 39°F | 25°F | 0.05" | -- |