Weather on April 27 at Isle Royale
Isle Royale National Park
MIMidwest800 ft elevation
Avg High49°F
Avg Low32°F
Warmest197454°F
Coldest200829°F
Based on 49 years of data from Houghton, MI
Planning Your Visit
April 27th in Isle Royale National Park (via Houghton, MI) typically brings chilly spring weather, with average highs around 49°F and lows near 32°F. Over 49 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 29% of recorded April 27th dates, with snow falling 4% of the time. The last decade has been 4.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.3°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.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 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" |
April 27 at Nearby Parks
Holiday Weather at Isle Royale
Official NPS WebsiteVisit nps.gov/isro for park information, alerts, and reservations
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