Weather on July 27 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
July 27th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 76°F and lows near 56°F. Over 50 years of records, the warmest July 27th was in 2024 (77°F average), while the coldest was 2013 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 30% of July 27th dates historically, with the wettest July 27th recording 1.8" of rain. The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
Planning for July 27th 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 | 85°F | 68°F | 0" | -- |
| 2024 | 89°F | 64°F | 0" | -- |
| 2023 | 87°F | 61°F | 0.74" | -- |
| 2022 | 77°F | 57°F | 0.15" | -- |
| 2021 | 80°F | 55°F | 0.03" | -- |
| 2020 | 77°F | 62°F | 0" | -- |
| 2019 | 78°F | 62°F | 0" | -- |
| 2018 | 64°F | 54°F | 0" | -- |
| 2017 | 76°F | 56°F | 0" | -- |
| 2016 | 69°F | 60°F | 0" | -- |
| 2015 | 91°F | 61°F | 0" | -- |
| 2014 | 67°F | 49°F | 1.09" | -- |
| 2013 | 57°F | 45°F | 0.25" | -- |
| 2012 | 71°F | 48°F | 0" | -- |
| 2011 | 73°F | 56°F | 0.25" | -- |
| 2010 | 82°F | 62°F | 1.35" | -- |
| 2009 | 77°F | 56°F | 0" | -- |
| 2008 | 75°F | 53°F | 0" | -- |
| 2007 | 84°F | 62°F | 0" | -- |
| 2006 | 82°F | 60°F | 0" | -- |
| 2005 | 70°F | 42°F | 0.05" | -- |
| 2004 | 81°F | 52°F | 0" | -- |
| 2003 | 71°F | 54°F | 0" | -- |
| 2002 | 83°F | 60°F | 0.08" | 0" |
| 2001 | 73°F | 47°F | 0" | 0" |
| 2000 | 75°F | 62°F | 0.13" | 0" |
| 1999 | 80°F | 57°F | 0" | 0" |
| 1998 | 76°F | 63°F | 1.42" | 0" |
| 1997 | 81°F | 61°F | 0" | 0" |
| 1996 | 72°F | 48°F | 0" | 0" |
| 1995 | 81°F | 60°F | 0" | 0" |
| 1994 | 72°F | 54°F | 0" | 0" |
| 1993 | 75°F | 60°F | 0" | 0" |
| 1992 | 62°F | 49°F | 0" | 0" |
| 1991 | 72°F | 51°F | 0" | 0" |
| 1990 | 75°F | 65°F | 0.18" | 0" |
| 1989 | 73°F | 58°F | 1.78" | 0" |
| 1988 | 86°F | 59°F | 0" | 0" |
| 1983 | 91°F | 61°F | 0" | 0" |
| 1981 | 69°F | 50°F | 0" | 0" |
| 1980 | 77°F | 47°F | 0" | 0" |
| 1979 | 70°F | 54°F | 0" | 0" |
| 1978 | 65°F | 50°F | 0" | 0" |
| 1977 | 76°F | 60°F | 0" | 0" |
| 1976 | 76°F | 56°F | 0" | 0" |
| 1975 | 77°F | 59°F | 0" | 0" |
| 1974 | 79°F | 59°F | 0" | 0" |
| 1973 | 62°F | 50°F | 1.8" | 0" |
| 1972 | 73°F | 45°F | 0" | 0" |
| 1971 | 70°F | 48°F | 0.89" | 0" |