Weather on June 30 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
June 30th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 75°F and lows near 54°F. Over 50 years of records, the warmest June 30th was in 2002 (81°F average), while the coldest was 2015 (49°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 40% of June 30th dates historically, with the wettest June 30th recording 2.01" of rain. The last decade has been 3.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.6°F cooler on this date compared to 20-30 years ago.
Planning for June 30th 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 | 82°F | 63°F | 0" | -- |
| 2024 | 68°F | 44°F | 0" | -- |
| 2023 | 79°F | 56°F | 0" | -- |
| 2022 | 87°F | 58°F | 1.19" | -- |
| 2021 | 78°F | 60°F | 0" | -- |
| 2020 | 86°F | 66°F | 0" | -- |
| 2019 | 75°F | 54°F | 0" | -- |
| 2018 | 86°F | 62°F | 2.01" | -- |
| 2017 | 60°F | 48°F | 0.03" | -- |
| 2016 | 63°F | 49°F | 0.25" | -- |
| 2015 | 59°F | 39°F | 0" | -- |
| 2014 | 86°F | 62°F | 0" | -- |
| 2013 | 77°F | 48°F | 0" | -- |
| 2012 | 78°F | 56°F | 0" | -- |
| 2011 | 82°F | 50°F | 0.03" | -- |
| 2010 | 66°F | 40°F | 0" | -- |
| 2009 | 53°F | 48°F | 0.64" | -- |
| 2008 | 73°F | 48°F | 0" | -- |
| 2007 | 63°F | 42°F | 0" | -- |
| 2006 | 82°F | 56°F | 0" | -- |
| 2005 | 76°F | 53°F | 1.63" | -- |
| 2004 | 83°F | 46°F | 0.46" | -- |
| 2003 | 78°F | 52°F | 0" | 0" |
| 2002 | 96°F | 67°F | 0" | 0" |
| 2001 | 88°F | 65°F | 0.15" | 0" |
| 2000 | 81°F | 60°F | 0" | 0" |
| 1999 | 71°F | 53°F | 0.41" | 0" |
| 1998 | 75°F | 63°F | 0" | 0" |
| 1997 | 82°F | 57°F | 0.05" | 0" |
| 1996 | 88°F | 63°F | 0.56" | 0" |
| 1995 | 77°F | 58°F | 0" | 0" |
| 1994 | 66°F | 47°F | 0" | 0" |
| 1993 | 63°F | 47°F | 0" | 0" |
| 1992 | 66°F | 50°F | 0" | 0" |
| 1991 | 61°F | 52°F | 0.03" | 0" |
| 1990 | 73°F | 58°F | 0.36" | 0" |
| 1989 | 80°F | 53°F | 1.4" | 0" |
| 1988 | 66°F | 48°F | 0" | 0" |
| 1983 | 83°F | 58°F | 0.94" | 0" |
| 1981 | 68°F | 45°F | 0" | 0" |
| 1980 | 70°F | 49°F | 0" | 0" |
| 1979 | 72°F | 53°F | 0" | 0" |
| 1978 | 79°F | 60°F | 0" | 0" |
| 1977 | 67°F | 57°F | 1.93" | 0" |
| 1976 | 71°F | 48°F | 0" | 0" |
| 1975 | 91°F | 66°F | 0.1" | 0" |
| 1974 | 73°F | 51°F | 0" | 0" |
| 1973 | 65°F | 50°F | 0.03" | 0" |
| 1972 | 78°F | 55°F | 0" | 0" |
| 1971 | 68°F | 50°F | 1.09" | 0" |