Weather on January 15 at Isle Royale
Isle Royale National Park
Based on 51 years of data from Houghton, MI
Planning Your Visit
January 15th in Isle Royale National Park (via Houghton, MI) typically brings very cold winter weather, with average highs around 20°F and lows near 9°F. Over 51 years of records, the warmest January 15th was in 2021 (35°F average), while the coldest was 1972 (-12°F) — a 47°F range across recorded history. Precipitation has occurred on 63% of recorded January 15th dates, with snow falling 43% of the time (heaviest snowfall: 17.8"). The last decade has been 6.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.6°F warmer on this date compared to 20-30 years ago.
Planning for January 15th 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 |
|---|---|---|---|---|
| 2026 | 19°F | 14°F | 0.03" | -- |
| 2025 | 24°F | 6°F | 0" | -- |
| 2024 | 15°F | 4°F | 0.03" | -- |
| 2023 | 36°F | 27°F | 0" | -- |
| 2022 | 17°F | -2°F | 0" | -- |
| 2021 | 37°F | 34°F | 0.03" | -- |
| 2020 | 27°F | 23°F | 0.05" | -- |
| 2019 | 31°F | 13°F | 0.2" | -- |
| 2018 | 22°F | 9°F | -- | -- |
| 2017 | 34°F | 1°F | 0" | -- |
| 2016 | 26°F | 16°F | 0.2" | -- |
| 2015 | 32°F | 14°F | 0.03" | -- |
| 2014 | 14°F | 9°F | 0" | -- |
| 2013 | 22°F | 9°F | 0.15" | -- |
| 2012 | 26°F | 4°F | 0" | -- |
| 2011 | 22°F | 6°F | -- | -- |
| 2010 | 35°F | 24°F | 0" | -- |
| 2009 | 1°F | -4°F | 0" | -- |
| 2008 | 21°F | 19°F | 0.03" | -- |
| 2007 | 16°F | 8°F | 0" | -- |
| 2006 | 27°F | 20°F | 0.05" | -- |
| 2005 | 1°F | -6°F | 0" | -- |
| 2004 | 10°F | 2°F | 0" | -- |
| 2003 | 17°F | 4°F | 0.15" | 0.7" |
| 2002 | 24°F | 12°F | 0" | 0" |
| 2001 | 34°F | 29°F | 1.75" | 4" |
| 2000 | 30°F | 19°F | 0.13" | 0.6" |
| 1999 | 17°F | -8°F | 0" | 0" |
| 1998 | 28°F | 6°F | 0.41" | 1" |
| 1997 | 22°F | 8°F | 0.33" | 2.6" |
| 1996 | 11°F | 5°F | 0.03" | 0.1" |
| 1995 | 25°F | 20°F | 0" | 0" |
| 1994 | -5°F | -13°F | 0.3" | 2.4" |
| 1993 | 24°F | 12°F | 0.43" | 4.5" |
| 1992 | 3°F | -4°F | 0.46" | 3.2" |
| 1991 | 29°F | 19°F | 0.05" | 0.1" |
| 1990 | 30°F | 18°F | 0" | 0" |
| 1989 | 32°F | 21°F | 0.25" | 1.2" |
| 1988 | 28°F | 13°F | 0.1" | 0.4" |
| 1982 | 14°F | -1°F | 0.94" | 7" |
| 1981 | 20°F | 13°F | 1.68" | 17.8" |
| 1980 | 33°F | 27°F | 1.07" | 4.2" |
| 1979 | 1°F | -11°F | 0.79" | 3.5" |
| 1978 | 21°F | 8°F | 0" | 0" |
| 1977 | 2°F | -9°F | 0.23" | 1.3" |
| 1976 | 13°F | -3°F | 0.08" | 0.5" |
| 1975 | 16°F | 10°F | 0.99" | 7" |
| 1974 | 18°F | 6°F | 0.36" | 3.2" |
| 1973 | 34°F | 24°F | 0" | 0" |
| 1972 | -6°F | -19°F | 0.28" | 2" |
| 1971 | 11°F | 7°F | 0.05" | 1.5" |