Weather on December 31 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
December 31st in Isle Royale National Park (via Houghton, MI) typically brings very cold winter weather, with average highs around 25°F and lows near 13°F. Over 50 years of records, the warmest December 31st was in 2006 (32°F average), while the coldest was 2013 (1°F) — a 31°F range across recorded history. Precipitation has occurred on 60% of recorded December 31st dates, with snow falling 40% of the time (heaviest snowfall: 9.5"). The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Isle Royale? 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 |
|---|---|---|---|---|
| 2025 | 19°F | 8°F | 0.03" | -- |
| 2024 | 34°F | 30°F | 0" | -- |
| 2023 | 28°F | 22°F | 0" | -- |
| 2022 | 29°F | 24°F | 0" | -- |
| 2021 | 25°F | 10°F | 0" | -- |
| 2020 | 28°F | 16°F | 0" | -- |
| 2019 | 24°F | 12°F | 0.05" | -- |
| 2018 | 28°F | 15°F | 0.33" | -- |
| 2017 | 6°F | 1°F | 0.03" | -- |
| 2016 | 27°F | 17°F | 0.05" | -- |
| 2015 | 25°F | 20°F | 0.03" | -- |
| 2014 | 16°F | -4°F | 0.05" | -- |
| 2013 | 4°F | -3°F | 0" | -- |
| 2012 | 26°F | 11°F | 0" | -- |
| 2011 | 32°F | 19°F | 0" | -- |
| 2010 | 42°F | 22°F | 0" | -- |
| 2009 | 21°F | 13°F | 0" | -- |
| 2008 | 15°F | 1°F | 0.08" | -- |
| 2007 | 25°F | 7°F | 0" | -- |
| 2006 | 34°F | 30°F | 0.99" | -- |
| 2005 | 31°F | 26°F | 0.15" | -- |
| 2004 | 43°F | 14°F | 0.2" | -- |
| 2003 | 31°F | 21°F | 0.28" | -- |
| 2002 | 26°F | 16°F | 0" | 2.3" |
| 2001 | 21°F | 15°F | 0.08" | 0.7" |
| 2000 | 23°F | 17°F | 0.33" | 2.8" |
| 1999 | 27°F | 5°F | 0.38" | 2.6" |
| 1998 | 10°F | 3°F | 0.74" | 3" |
| 1997 | 14°F | 6°F | 0.2" | 1" |
| 1996 | 21°F | 10°F | 0.58" | 2.5" |
| 1995 | 31°F | 26°F | 0" | 0" |
| 1994 | 32°F | 20°F | 0.03" | 1" |
| 1993 | 29°F | 15°F | 0" | 0" |
| 1992 | 18°F | 8°F | 0.53" | 6" |
| 1991 | 31°F | 25°F | 0" | 0" |
| 1990 | 12°F | -8°F | 0" | 0.1" |
| 1989 | 26°F | 16°F | 0.18" | 1" |
| 1988 | 19°F | 10°F | 0.08" | 2" |
| 1987 | 31°F | 9°F | 0.71" | 2.8" |
| 1981 | 27°F | 8°F | 2.34" | 9.5" |
| 1980 | 29°F | 23°F | 0.03" | 0.1" |
| 1979 | 34°F | 26°F | 0" | 0" |
| 1978 | 14°F | 9°F | 0.03" | 0.3" |
| 1977 | 18°F | 11°F | 0.03" | 0.4" |
| 1976 | 12°F | 0°F | 1.27" | 6.4" |
| 1975 | 32°F | 22°F | 0" | 0" |
| 1974 | 31°F | 15°F | 0" | 0" |
| 1973 | 7°F | 1°F | 0.97" | 5.8" |
| 1972 | 33°F | 19°F | 0.2" | 1" |
| 1971 | 26°F | 9°F | 0" | 0" |