Weather on June 12 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
June 12th in Isle Royale National Park (via Houghton, MI) typically brings mild summer weather, with average highs around 69°F and lows near 48°F. Over 50 years of records, the warmest June 12th was in 1988 (79°F average), while the coldest was 1978 (45°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 38% of June 12th dates historically, with the wettest June 12th recording 5.26" of rain. The last decade has been 4.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.4°F cooler on this date compared to 20-30 years ago.
Planning for June 12th 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 | 59°F | 41°F | 0" | -- |
| 2024 | 78°F | 51°F | 0.23" | -- |
| 2023 | 53°F | 44°F | 0.76" | -- |
| 2022 | 65°F | 38°F | 0" | -- |
| 2021 | 77°F | 53°F | 0" | -- |
| 2020 | 56°F | 34°F | 0" | -- |
| 2019 | 60°F | 44°F | 0" | -- |
| 2018 | 74°F | 52°F | 0" | -- |
| 2017 | 76°F | 58°F | 0" | -- |
| 2016 | 64°F | 45°F | 0" | -- |
| 2015 | 74°F | 45°F | 0" | -- |
| 2014 | 60°F | 43°F | 1.37" | -- |
| 2013 | 77°F | 50°F | 0" | -- |
| 2012 | 57°F | 42°F | 0" | -- |
| 2011 | 71°F | 36°F | 0" | -- |
| 2010 | 64°F | 53°F | 0.05" | -- |
| 2009 | 68°F | 37°F | 0" | -- |
| 2008 | 68°F | 43°F | 0.84" | -- |
| 2007 | 86°F | 56°F | 0" | -- |
| 2006 | 66°F | 43°F | 0" | -- |
| 2005 | 75°F | 60°F | 0.13" | -- |
| 2004 | 76°F | 46°F | 0.56" | -- |
| 2003 | 70°F | 45°F | 0" | 0" |
| 2002 | 60°F | 45°F | 0.05" | 0" |
| 2001 | 78°F | 55°F | 0" | 0" |
| 2000 | 59°F | 36°F | 0" | 0" |
| 1999 | 73°F | 51°F | 0.76" | 0" |
| 1998 | 60°F | 51°F | 2.26" | 0" |
| 1997 | 83°F | 53°F | 0" | 0" |
| 1996 | 83°F | 52°F | 0" | 0" |
| 1995 | 75°F | 42°F | 0" | 0" |
| 1994 | 75°F | 53°F | 0.79" | 0" |
| 1993 | 78°F | 55°F | 0" | 0" |
| 1992 | 78°F | 65°F | 0" | 0" |
| 1991 | 56°F | 43°F | 0" | 0" |
| 1990 | 81°F | 58°F | 5.26" | 0" |
| 1989 | 56°F | 48°F | 3.38" | 0" |
| 1988 | 89°F | 68°F | 0" | 0" |
| 1983 | 86°F | 61°F | 0.1" | 0" |
| 1981 | 74°F | 54°F | 0.13" | 0" |
| 1980 | 83°F | 51°F | 0.08" | 0" |
| 1979 | 69°F | 46°F | 0" | 0" |
| 1978 | 50°F | 39°F | 0" | 0" |
| 1977 | 58°F | 41°F | 0" | 0" |
| 1976 | 79°F | 47°F | 0.56" | 0" |
| 1975 | 52°F | 46°F | 1.22" | 0" |
| 1974 | 60°F | 41°F | 0" | 0" |
| 1973 | 72°F | 50°F | 0" | 0" |
| 1972 | 56°F | 46°F | 0.05" | 0" |
| 1971 | 71°F | 50°F | 0" | 0" |