Weather on April 12 at Isle Royale
Isle Royale National Park
Based on 49 years of data from Houghton, MI
Planning Your Visit
April 12th in Isle Royale National Park (via Houghton, MI) typically brings chilly spring weather, with average highs around 45°F and lows near 29°F. Over 49 years of records, the warmest April 12th was in 2015 (59°F average), while the coldest was 1992 (20°F) — a 39°F range across recorded history. Precipitation has occurred on 39% of recorded April 12th dates, with snow falling 10% of the time (heaviest snowfall: 2.5"). The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for April 12th in Isle Royale? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 54°F | 28°F | 0" | -- |
| 2023 | 78°F | 39°F | 0" | -- |
| 2022 | 49°F | 31°F | 0.99" | -- |
| 2021 | 48°F | 41°F | 0.99" | -- |
| 2020 | 39°F | 30°F | 0.15" | -- |
| 2019 | 38°F | 29°F | 0.2" | -- |
| 2018 | 40°F | 26°F | 0.51" | -- |
| 2017 | 56°F | 22°F | 0" | -- |
| 2016 | 36°F | 26°F | 0" | -- |
| 2015 | 73°F | 45°F | 0" | -- |
| 2014 | 37°F | 28°F | 0" | -- |
| 2013 | 32°F | 23°F | 0.28" | -- |
| 2012 | 48°F | 22°F | 0" | -- |
| 2011 | 64°F | 33°F | 0" | -- |
| 2010 | 57°F | 35°F | 0" | -- |
| 2009 | 45°F | 20°F | 0" | -- |
| 2008 | 35°F | 26°F | 0" | -- |
| 2007 | 34°F | 25°F | 0" | -- |
| 2006 | 60°F | 42°F | 0.05" | -- |
| 2005 | 45°F | 34°F | 0" | -- |
| 2004 | 33°F | 22°F | 0" | -- |
| 2003 | 38°F | 25°F | 0" | -- |
| 2002 | 50°F | 33°F | 0.05" | -- |
| 2001 | 45°F | 36°F | 2.44" | 0" |
| 2000 | 41°F | 23°F | 0.18" | 2" |
| 1999 | 53°F | 28°F | 0" | 0" |
| 1998 | 76°F | 38°F | 0" | 0" |
| 1997 | 41°F | 17°F | 0" | 0" |
| 1996 | 37°F | 26°F | 0.41" | 0" |
| 1995 | 42°F | 34°F | 0.99" | 0" |
| 1994 | 58°F | 27°F | 0" | 0" |
| 1993 | 36°F | 26°F | 0" | 0" |
| 1992 | 25°F | 15°F | 0" | 0" |
| 1991 | 42°F | 27°F | 0" | 0" |
| 1990 | 36°F | 24°F | 0" | 0" |
| 1989 | 34°F | 25°F | 0.15" | 0.7" |
| 1988 | 62°F | 35°F | 0" | 0" |
| 1982 | 42°F | 29°F | 0.43" | 2" |
| 1981 | 44°F | 29°F | 0" | 0" |
| 1980 | 32°F | 25°F | 0" | 0" |
| 1979 | 36°F | 32°F | 0.1" | 0" |
| 1978 | 38°F | 28°F | 0.51" | 0.2" |
| 1977 | 51°F | 36°F | 0.43" | 0" |
| 1976 | 51°F | 24°F | 0" | 0" |
| 1975 | 38°F | 19°F | 0" | 0" |
| 1974 | 37°F | 34°F | 1.14" | 0" |
| 1973 | 34°F | 24°F | 0" | 0" |
| 1972 | 34°F | 29°F | 0.23" | 2.5" |
| 1971 | 55°F | 34°F | 0" | 0" |