Weather on August 12 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
August 12th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 77°F and lows near 55°F. Over 50 years of records, the warmest August 12th was in 1988 (76°F average), while the coldest was 1992 (53°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 24% of August 12th dates historically, with the wettest August 12th recording 0.66" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 12th in Isle Royale? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 77°F | 60°F | 0" | -- |
| 2024 | 80°F | 56°F | 0" | -- |
| 2023 | 67°F | 52°F | 0.08" | -- |
| 2022 | 77°F | 41°F | 0.64" | -- |
| 2021 | 77°F | 59°F | 0" | -- |
| 2020 | 83°F | 59°F | 0" | -- |
| 2019 | 78°F | 53°F | 0" | -- |
| 2018 | 87°F | 54°F | 0" | -- |
| 2017 | 75°F | 52°F | 0" | -- |
| 2016 | 68°F | 60°F | 0" | -- |
| 2015 | 83°F | 54°F | 0" | -- |
| 2014 | 66°F | 51°F | 0" | -- |
| 2013 | 68°F | 45°F | 0" | -- |
| 2012 | 75°F | 49°F | 0" | -- |
| 2011 | 73°F | 63°F | 0.23" | -- |
| 2010 | 83°F | 67°F | 0" | -- |
| 2009 | 85°F | 52°F | 0" | -- |
| 2008 | 78°F | 52°F | 0" | -- |
| 2007 | 73°F | 53°F | 0" | -- |
| 2006 | 75°F | 51°F | 0" | -- |
| 2005 | 73°F | 62°F | 0.2" | -- |
| 2004 | 64°F | 44°F | 0" | -- |
| 2003 | 74°F | 49°F | 0" | 0" |
| 2002 | 82°F | 60°F | 0" | 0" |
| 2001 | 77°F | 61°F | 0.05" | 0" |
| 2000 | 80°F | 58°F | 0.15" | 0" |
| 1999 | 75°F | 61°F | 0" | 0" |
| 1998 | 76°F | 54°F | 0" | 0" |
| 1997 | 72°F | 53°F | 0" | 0" |
| 1996 | 82°F | 64°F | 0" | 0" |
| 1995 | 81°F | 56°F | 0" | 0" |
| 1994 | 76°F | 55°F | 0" | 0" |
| 1993 | 87°F | 62°F | 0" | 0" |
| 1992 | 63°F | 43°F | 0" | 0" |
| 1991 | 82°F | 59°F | 0" | 0" |
| 1990 | 71°F | 48°F | 0" | 0" |
| 1989 | 85°F | 58°F | 0" | 0" |
| 1988 | 82°F | 69°F | 0" | 0" |
| 1983 | 78°F | 53°F | 0" | 0" |
| 1981 | 77°F | 64°F | 0" | 0" |
| 1980 | 74°F | 54°F | 0.3" | 0" |
| 1979 | 76°F | 48°F | 0.58" | 0" |
| 1978 | 85°F | 60°F | 0" | 0" |
| 1977 | 67°F | 49°F | 0.23" | 0" |
| 1976 | 74°F | 60°F | 0.03" | 0" |
| 1975 | 87°F | 59°F | 0.66" | 0" |
| 1974 | 72°F | 55°F | 0.18" | 0" |
| 1973 | 76°F | 58°F | 0" | 0" |
| 1972 | 78°F | 60°F | 0" | 0" |
| 1971 | 80°F | 54°F | 0" | 0" |