Weather on December 31 at Indiana Dunes
Indiana Dunes National Park
Based on 55 years of data from Gary, IN
Planning Your Visit
December 31st in Indiana Dunes National Park (via Gary, IN) typically brings cold winter weather, with average highs around 35°F and lows near 22°F. Over 55 years of records, the warmest December 31st was in 2006 (47°F average), while the coldest was 1976 (0°F) — a 47°F range across recorded history. Precipitation has occurred on 31% of recorded December 31st dates, with snow falling 11% of the time (heaviest snowfall: 4.5"). The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Indiana Dunes? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 34°F | 14°F | -- | -- |
| 2024 | 47°F | 36°F | 0.28" | 0" |
| 2023 | 37°F | -- | 0" | 0" |
| 2022 | 51°F | 33°F | 0" | 0" |
| 2021 | 37°F | 30°F | -- | -- |
| 2020 | 38°F | 24°F | -- | -- |
| 2019 | 34°F | 26°F | 0.23" | 0.6" |
| 2018 | 41°F | 34°F | -- | -- |
| 2017 | 12°F | 5°F | -- | -- |
| 2016 | 39°F | 28°F | 0" | 0" |
| 2015 | 31°F | 24°F | 0.03" | 0" |
| 2014 | 26°F | 5°F | 0" | 0" |
| 2013 | 16°F | 1°F | 0.13" | 1" |
| 2012 | 33°F | 17°F | 0" | 0" |
| 2011 | 43°F | 33°F | 0.41" | 0" |
| 2010 | 49°F | 38°F | 0.74" | 0" |
| 2009 | 32°F | 24°F | 0.2" | 1.2" |
| 2008 | 41°F | 17°F | 0.05" | 0.4" |
| 2007 | 33°F | 24°F | 0" | 0" |
| 2006 | 51°F | 43°F | 0.41" | 0" |
| 2005 | 37°F | 32°F | 0.76" | 0" |
| 2004 | 55°F | 36°F | 0.13" | 0" |
| 2003 | 41°F | 27°F | 0" | 0" |
| 2002 | 58°F | 33°F | 0" | 0" |
| 2001 | 21°F | 7°F | 0" | 0" |
| 2000 | 31°F | 21°F | 0.81" | 4.5" |
| 1999 | 40°F | 26°F | 0" | 0" |
| 1998 | 17°F | 9°F | -- | 0" |
| 1997 | 27°F | 12°F | 0" | 0" |
| 1996 | 36°F | 28°F | -- | -- |
| 1995 | 35°F | 29°F | -- | -- |
| 1994 | 37°F | 21°F | 0.51" | 0" |
| 1993 | 28°F | 0°F | 0" | 0" |
| 1992 | 56°F | 21°F | 0" | 0" |
| 1991 | 33°F | 30°F | 0" | 0" |
| 1990 | 13°F | 0°F | 0" | 0" |
| 1989 | 33°F | 28°F | 0" | 0" |
| 1988 | 32°F | 15°F | 0" | 0" |
| 1987 | 38°F | -- | 0" | 0" |
| 1986 | 36°F | 31°F | 0" | 0" |
| 1985 | 41°F | 19°F | 0" | 0" |
| 1984 | 35°F | 29°F | 0.3" | 0" |
| 1983 | 23°F | 3°F | 0" | 0" |
| 1982 | 37°F | 23°F | 0" | 0" |
| 1981 | 38°F | 22°F | 0" | 0" |
| 1980 | 35°F | 25°F | 0" | 0" |
| 1979 | -- | 14°F | 0" | 0" |
| 1978 | 44°F | 32°F | 8.13" | 0" |
| 1977 | 38°F | 19°F | 0" | 0" |
| 1976 | 7°F | -7°F | 0" | 0" |
| 1975 | 34°F | 27°F | 0" | 0" |
| 1974 | 43°F | 31°F | 0.2" | 0" |
| 1973 | 21°F | 16°F | 0.18" | 0.5" |
| 1972 | 48°F | 38°F | 0" | 0" |
| 1971 | 35°F | 26°F | 0" | 0" |