Weather on January 20 at Isle Royale
Isle Royale National Park
Based on 51 years of data from Houghton, MI
Planning Your Visit
January 20th in Isle Royale National Park (via Houghton, MI) typically brings very cold winter weather, with average highs around 20°F and lows near 7°F. Over 51 years of records, the warmest January 20th was in 2018 (32°F average), while the coldest was 2025 (-2°F) — a 34°F range across recorded history. Precipitation has occurred on 49% of recorded January 20th dates, with snow falling 39% of the time (heaviest snowfall: 3.2"). The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for January 20th 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 | 12°F | 4°F | 0.03" | -- |
| 2025 | 0°F | -4°F | 0.03" | -- |
| 2024 | 17°F | 10°F | 0" | -- |
| 2023 | 26°F | 20°F | 0" | -- |
| 2022 | 9°F | 1°F | 0" | -- |
| 2021 | 36°F | 5°F | 0" | -- |
| 2020 | 21°F | 0°F | 0" | -- |
| 2019 | 4°F | -3°F | -- | -- |
| 2018 | 39°F | 24°F | 0" | -- |
| 2017 | 38°F | 20°F | 0.41" | -- |
| 2016 | 21°F | 8°F | 0" | -- |
| 2015 | 22°F | 1°F | 0" | -- |
| 2014 | 5°F | -3°F | 0" | -- |
| 2013 | 7°F | 2°F | 0.3" | -- |
| 2012 | 10°F | -2°F | 0.03" | -- |
| 2011 | 12°F | -1°F | -- | -- |
| 2010 | 25°F | 16°F | 0" | -- |
| 2009 | 20°F | 11°F | 0" | -- |
| 2008 | 6°F | -1°F | 0" | -- |
| 2007 | 17°F | -4°F | 0" | -- |
| 2006 | 28°F | 22°F | 0.03" | -- |
| 2005 | 14°F | 7°F | 0" | -- |
| 2004 | 10°F | -1°F | 0" | -- |
| 2003 | 7°F | 2°F | 0.18" | 1.1" |
| 2002 | 23°F | 12°F | 0.05" | 1" |
| 2001 | 21°F | 4°F | 0" | 0" |
| 2000 | 14°F | 0°F | 0.41" | 3.1" |
| 1999 | 24°F | 13°F | 0" | 0" |
| 1998 | 22°F | 17°F | 0.08" | 0.6" |
| 1997 | 33°F | 19°F | 0" | 0" |
| 1996 | 14°F | -8°F | 0.76" | 3.2" |
| 1995 | 28°F | 22°F | 0.51" | 2.9" |
| 1994 | 7°F | -10°F | 0.13" | 0.5" |
| 1993 | 30°F | 9°F | 0" | 0" |
| 1992 | 30°F | 5°F | 0.05" | 0.3" |
| 1991 | 16°F | 4°F | 0.25" | 1.6" |
| 1990 | 27°F | 14°F | 0" | 0" |
| 1989 | 19°F | 3°F | 0.13" | 1.5" |
| 1988 | 32°F | 19°F | 0.71" | 2.8" |
| 1982 | 8°F | -1°F | 0.23" | 1.5" |
| 1981 | 30°F | 23°F | 0" | 0" |
| 1980 | 24°F | 13°F | 0.1" | 0.6" |
| 1979 | 23°F | 17°F | 0.13" | 1" |
| 1978 | 21°F | 11°F | 0.05" | 1" |
| 1977 | 19°F | 9°F | 0" | 0" |
| 1976 | 21°F | 5°F | 0.2" | 1.7" |
| 1975 | 21°F | -5°F | 0.64" | 2.5" |
| 1974 | 31°F | 24°F | 0.94" | 0.8" |
| 1973 | 22°F | 12°F | 0" | 0" |
| 1972 | 12°F | 2°F | 0.23" | 1.7" |
| 1971 | 21°F | -3°F | 0" | 0.3" |