Weather on April 27 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
April 27th in Isle Royale National Park (via Houghton, MI) typically brings cool spring weather, with average highs around 50°F and lows near 32°F. Over 50 years of records, the warmest April 27th was in 1974 (54°F average), while the coldest was 2008 (29°F) — a 25°F range across recorded history. Precipitation has occurred on 30% of recorded April 27th dates, with snow falling 4% of the time. The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
Planning for April 27th 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 |
|---|---|---|---|---|
| 2026 | 60°F | 37°F | 0.97" | -- |
| 2025 | 61°F | 34°F | 0" | -- |
| 2023 | 51°F | 34°F | 0.38" | -- |
| 2022 | 39°F | 24°F | 0" | -- |
| 2021 | 42°F | 34°F | 0" | -- |
| 2020 | 49°F | 36°F | 0.56" | -- |
| 2019 | 44°F | 24°F | 0" | -- |
| 2018 | 39°F | 30°F | 0" | -- |
| 2017 | 31°F | 27°F | 0.84" | -- |
| 2016 | 46°F | 32°F | 0" | -- |
| 2015 | 54°F | 31°F | 0" | -- |
| 2014 | 37°F | 24°F | 0" | -- |
| 2013 | 58°F | 34°F | 0" | -- |
| 2012 | 45°F | 25°F | 0" | -- |
| 2011 | 39°F | 33°F | 0" | -- |
| 2010 | 50°F | 30°F | 0" | -- |
| 2009 | 49°F | 34°F | 0.1" | -- |
| 2008 | 34°F | 24°F | 0" | -- |
| 2007 | 62°F | 34°F | 0" | -- |
| 2006 | 45°F | 27°F | 0" | -- |
| 2005 | 38°F | 31°F | 0.05" | -- |
| 2004 | 41°F | 21°F | 0" | -- |
| 2003 | 60°F | 37°F | 0" | -- |
| 2002 | 39°F | 24°F | 0" | -- |
| 2001 | 67°F | 32°F | 0" | 0" |
| 2000 | 69°F | 38°F | 0" | 0" |
| 1999 | 55°F | 38°F | 0" | 0" |
| 1998 | 53°F | 29°F | 0" | 0" |
| 1997 | 64°F | 42°F | 0.05" | 0" |
| 1996 | 41°F | 21°F | 0" | 0" |
| 1995 | 51°F | 36°F | 0" | 0" |
| 1994 | 38°F | 28°F | 0.64" | 0.2" |
| 1993 | 42°F | 32°F | 1.04" | 0" |
| 1992 | 44°F | 29°F | 0" | 0" |
| 1991 | 57°F | 44°F | 0.05" | 0" |
| 1990 | 63°F | 42°F | 1.02" | 0" |
| 1989 | 49°F | 34°F | 0" | 0" |
| 1988 | 48°F | 32°F | 0" | 0" |
| 1982 | 51°F | 29°F | 0" | 0" |
| 1981 | 51°F | 35°F | 0.56" | 0" |
| 1980 | 54°F | 35°F | 0" | 0" |
| 1979 | 46°F | 30°F | 0" | 0" |
| 1978 | 66°F | 37°F | 0" | 0" |
| 1977 | 61°F | 30°F | 0.15" | 0" |
| 1976 | 41°F | 30°F | 0" | 0" |
| 1975 | 52°F | 35°F | 0" | 0" |
| 1974 | 66°F | 43°F | 0.05" | 0" |
| 1973 | 42°F | 31°F | 0" | 0" |
| 1972 | 60°F | 28°F | 0" | 0" |
| 1971 | 40°F | 27°F | 0.08" | 0.6" |