Weather on May 11 at Isle Royale
Isle Royale National Park
MIMidwest800 ft elevation
Avg High60°F
Avg Low39°F
Warmest199171°F
Coldest200535°F
Based on 50 years of data from Houghton, MI
Planning Your Visit
May 11th in Isle Royale National Park (via Houghton, MI) typically brings mild spring weather, with average highs around 60°F and lows near 39°F. Over 50 years of records, the warmest May 11th was in 1991 (71°F average), while the coldest was 2005 (35°F) — a 36°F range across recorded history. Precipitation has occurred on 36% of recorded May 11th dates, with snow falling 2% of the time. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for May 11th in Isle Royale? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 89°F | 40°F | 0" | -- |
| 2024 | 61°F | 41°F | 0" | -- |
| 2023 | 80°F | 49°F | 0" | -- |
| 2022 | 67°F | 49°F | 0.56" | -- |
| 2021 | 54°F | 35°F | 0" | -- |
| 2020 | 43°F | 27°F | 0" | -- |
| 2019 | 61°F | 36°F | 0" | -- |
| 2018 | 51°F | 26°F | 0" | -- |
| 2017 | 58°F | 38°F | 0.03" | -- |
| 2016 | 64°F | 42°F | 0" | -- |
| 2015 | 46°F | 39°F | 1.73" | -- |
| 2014 | 66°F | 40°F | 0" | -- |
| 2013 | 43°F | 32°F | 0.43" | -- |
| 2012 | 77°F | 45°F | 0" | -- |
| 2011 | 75°F | 47°F | 0.51" | -- |
| 2010 | 50°F | 38°F | 0" | -- |
| 2009 | 58°F | 30°F | 0" | -- |
| 2008 | 49°F | 32°F | 0" | -- |
| 2007 | 54°F | 40°F | 0" | -- |
| 2006 | 37°F | 33°F | 3.84" | -- |
| 2005 | 43°F | 27°F | 0.03" | -- |
| 2004 | 51°F | 38°F | 0" | -- |
| 2003 | 54°F | 39°F | 4.01" | 0" |
| 2002 | 61°F | 30°F | 0" | 0" |
| 2001 | 67°F | 35°F | 0" | 0" |
| 2000 | 65°F | 45°F | 0.56" | 0" |
| 1999 | 52°F | 40°F | 0" | 0" |
| 1998 | 74°F | 37°F | 0" | 0" |
| 1997 | 60°F | 41°F | 0.23" | 0" |
| 1996 | 48°F | 29°F | 0" | 0" |
| 1995 | 70°F | 39°F | 0" | 0" |
| 1994 | 62°F | 38°F | 0.58" | 0" |
| 1993 | 74°F | 48°F | 0" | 0" |
| 1992 | 76°F | 57°F | 2.36" | 0" |
| 1991 | 82°F | 59°F | 0" | 0" |
| 1990 | 61°F | 30°F | 0" | 0" |
| 1989 | 58°F | 36°F | 0" | 0" |
| 1988 | 57°F | 35°F | 0.1" | 0" |
| 1982 | 62°F | 46°F | 0.1" | 0" |
| 1981 | 52°F | 33°F | 0" | 0" |
| 1980 | 51°F | 36°F | 0" | 0" |
| 1979 | 50°F | 39°F | 0.03" | 0" |
| 1978 | 78°F | 49°F | 0" | 0" |
| 1977 | 73°F | 43°F | 0" | 0" |
| 1976 | 50°F | 33°F | 0" | 0" |
| 1975 | 59°F | 42°F | 0.08" | 0" |
| 1974 | 54°F | 38°F | 1.65" | 0" |
| 1973 | 51°F | 37°F | 0" | 0" |
| 1972 | 58°F | 41°F | 0" | 0" |
| 1971 | 54°F | 32°F | 0.08" | 0.5" |
May 11 at Nearby Parks
Holiday Weather at Isle Royale
Official NPS WebsiteVisit nps.gov/isro for park information, alerts, and reservations
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