Weather on May 13 at Isle Royale
Isle Royale National Park
MIMidwest800 ft elevation
Avg High60°F
Avg Low40°F
Warmest202573°F
Coldest200536°F
Based on 51 years of data from Houghton, MI
Planning Your Visit
May 13th in Isle Royale National Park (via Houghton, MI) typically brings mild spring weather, with average highs around 60°F and lows near 40°F. Over 51 years of records, the warmest May 13th was in 2025 (73°F average), while the coldest was 2005 (36°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 29% of May 13th dates historically, with the wettest May 13th recording 1.47" of rain. The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
Planning for May 13th in Isle Royale? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 59°F | 37°F | 0" | -- |
| 2025 | 85°F | 61°F | 0" | -- |
| 2024 | 56°F | 42°F | 0" | -- |
| 2023 | 61°F | 52°F | 0" | -- |
| 2022 | 85°F | 47°F | 0" | -- |
| 2021 | 70°F | 38°F | 0" | -- |
| 2020 | 57°F | 27°F | 0" | -- |
| 2019 | 65°F | 34°F | 0" | -- |
| 2018 | 71°F | 37°F | 0" | -- |
| 2017 | 63°F | 37°F | 0" | -- |
| 2016 | 50°F | 36°F | 0" | -- |
| 2015 | 56°F | 32°F | 0" | -- |
| 2014 | 51°F | 37°F | 0" | -- |
| 2013 | 54°F | 28°F | 0" | -- |
| 2012 | 72°F | 47°F | 0" | -- |
| 2011 | 50°F | 40°F | 0.08" | -- |
| 2010 | 45°F | 41°F | 1.14" | -- |
| 2009 | 66°F | 54°F | 0.15" | -- |
| 2008 | 68°F | 34°F | 0.3" | -- |
| 2007 | 69°F | 32°F | 1.14" | -- |
| 2006 | 51°F | 40°F | 0" | -- |
| 2005 | 40°F | 33°F | 1.47" | -- |
| 2004 | 53°F | 38°F | 0.58" | -- |
| 2003 | 69°F | 39°F | 0" | 0" |
| 2002 | 55°F | 35°F | 0" | 0" |
| 2001 | 66°F | 41°F | 0" | 0" |
| 2000 | 56°F | 40°F | 0.69" | 0" |
| 1999 | 53°F | 48°F | 0" | 0" |
| 1998 | 71°F | 54°F | 0.43" | 0" |
| 1997 | 45°F | 32°F | 0" | 0" |
| 1996 | 58°F | 30°F | 0" | 0" |
| 1995 | 68°F | 42°F | 0.79" | 0" |
| 1994 | 65°F | 33°F | 0" | 0" |
| 1993 | 63°F | 36°F | 0" | 0" |
| 1992 | 49°F | 35°F | 0" | 0" |
| 1991 | 81°F | 56°F | 0" | 0" |
| 1990 | 67°F | 36°F | 0" | 0" |
| 1989 | 62°F | 49°F | 0" | 0" |
| 1988 | 50°F | 35°F | 0" | 0" |
| 1982 | 51°F | 41°F | 1.24" | 0" |
| 1981 | 61°F | 37°F | 0" | 0" |
| 1980 | 48°F | 38°F | 0" | 0" |
| 1979 | 59°F | 39°F | 0.03" | 0" |
| 1978 | 42°F | 37°F | 1.22" | 0" |
| 1977 | 77°F | 53°F | 0" | 0" |
| 1976 | 61°F | 43°F | 0.03" | 0" |
| 1975 | 71°F | 49°F | 0" | 0" |
| 1974 | 52°F | 33°F | 0" | 0" |
| 1973 | 46°F | 32°F | 0" | 0" |
| 1972 | 62°F | 46°F | 0.05" | 0" |
| 1971 | 55°F | 38°F | 0" | 0" |
May 13 at Nearby Parks
Holiday Weather at Isle Royale
Official NPS WebsiteVisit nps.gov/isro for park information, alerts, and reservations
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