Weather on May 25 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
May 25th in Isle Royale National Park (via Houghton, MI) typically brings mild spring weather, with average highs around 65°F and lows near 44°F. Over 50 years of records, the warmest May 25th was in 2010 (74°F average), while the coldest was 1971 (40°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 34% of May 25th dates historically, with the wettest May 25th recording 3.43" of rain. The last decade has been 7.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.1°F warmer on this date compared to 20-30 years ago.
Planning for May 25th 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 | 62°F | 43°F | 0" | -- |
| 2024 | 70°F | 46°F | 0.36" | -- |
| 2023 | 63°F | 32°F | 0" | -- |
| 2022 | 56°F | 47°F | 1.12" | -- |
| 2021 | 84°F | 63°F | 1.07" | -- |
| 2020 | 84°F | 56°F | 1.85" | -- |
| 2019 | 70°F | 50°F | 0" | -- |
| 2018 | 83°F | 61°F | 0.03" | -- |
| 2017 | 67°F | 37°F | 0" | -- |
| 2016 | 55°F | 47°F | 0.66" | -- |
| 2015 | 59°F | 48°F | 3.43" | -- |
| 2014 | 81°F | 53°F | 0" | -- |
| 2013 | 56°F | 37°F | 0" | -- |
| 2012 | 62°F | 52°F | 0" | -- |
| 2011 | 55°F | 31°F | 0" | -- |
| 2010 | 87°F | 61°F | 0" | -- |
| 2009 | 60°F | 36°F | 0" | -- |
| 2008 | 69°F | 39°F | 0.13" | -- |
| 2007 | 59°F | 41°F | 0" | -- |
| 2006 | 70°F | 46°F | 0" | -- |
| 2005 | 72°F | 46°F | 0" | -- |
| 2004 | 57°F | 41°F | 0.1" | -- |
| 2003 | 70°F | 43°F | 0" | 0" |
| 2002 | 51°F | 36°F | 0" | 0" |
| 2001 | 63°F | 46°F | 0.97" | 0" |
| 2000 | 63°F | 45°F | 0.15" | 0" |
| 1999 | 50°F | 42°F | 1.96" | 0" |
| 1998 | 72°F | 45°F | 0" | 0" |
| 1997 | 55°F | 40°F | 0" | 0" |
| 1996 | 64°F | 33°F | 0" | 0" |
| 1995 | 61°F | 37°F | 0" | 0" |
| 1994 | 62°F | 42°F | 1.75" | 0" |
| 1993 | 63°F | 38°F | 0" | 0" |
| 1992 | 54°F | 35°F | 0" | 0" |
| 1991 | 66°F | 54°F | 0" | 0" |
| 1990 | 67°F | 45°F | 0" | 0" |
| 1989 | 72°F | 46°F | 0.23" | 0" |
| 1988 | 67°F | 36°F | 0" | 0" |
| 1982 | 77°F | 45°F | 0" | 0" |
| 1981 | 61°F | 45°F | 0" | 0" |
| 1980 | 64°F | 45°F | 0" | 0" |
| 1979 | 64°F | 39°F | 0" | 0" |
| 1978 | 76°F | 53°F | 0.03" | 0" |
| 1977 | 65°F | 51°F | 0" | 0" |
| 1976 | 60°F | 38°F | 0" | 0" |
| 1975 | 79°F | 53°F | 0" | 0" |
| 1974 | 57°F | 39°F | 0" | 0" |
| 1973 | 51°F | 44°F | 0.38" | 0" |
| 1972 | 78°F | 51°F | 0" | 0" |
| 1971 | 41°F | 39°F | 1.52" | 0" |