Weather on August 30 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
August 30th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 72°F and lows near 53°F. Over 50 years of records, the warmest August 30th was in 2010 (80°F average), while the coldest was 2009 (52°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 38% of August 30th dates historically, with the wettest August 30th recording 1.78" of rain. The last decade has been 3.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.5°F cooler on this date compared to 20-30 years ago.
Planning for August 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 | 76°F | 41°F | 0" | -- |
| 2024 | 74°F | 63°F | 0.46" | -- |
| 2023 | 67°F | 40°F | 0" | -- |
| 2022 | 73°F | 63°F | 0" | -- |
| 2021 | 72°F | 59°F | 0" | -- |
| 2020 | 64°F | 43°F | 0" | -- |
| 2019 | 68°F | 47°F | 0" | -- |
| 2018 | 70°F | 43°F | 0" | -- |
| 2017 | 67°F | 49°F | 1.02" | -- |
| 2016 | 72°F | 56°F | 0" | -- |
| 2015 | 83°F | 57°F | 0" | -- |
| 2014 | 64°F | 57°F | 0.18" | -- |
| 2013 | 72°F | 58°F | 0.99" | -- |
| 2012 | 86°F | 67°F | 0" | -- |
| 2011 | 74°F | 55°F | 0.05" | -- |
| 2010 | 91°F | 70°F | 0" | -- |
| 2009 | 62°F | 43°F | 0" | -- |
| 2008 | 79°F | 47°F | 0" | -- |
| 2007 | 71°F | 47°F | 0" | -- |
| 2006 | 65°F | 50°F | 0" | -- |
| 2005 | 72°F | 50°F | 0" | -- |
| 2004 | 65°F | 47°F | 0.33" | -- |
| 2003 | 69°F | 51°F | 0.05" | 0" |
| 2002 | 80°F | 60°F | 0" | 0" |
| 2001 | 85°F | 70°F | 0.36" | 0" |
| 2000 | 77°F | 49°F | 0.03" | 0" |
| 1999 | 74°F | 46°F | 0" | 0" |
| 1998 | 75°F | 55°F | 0" | 0" |
| 1997 | 66°F | 54°F | 0.25" | 0" |
| 1996 | 80°F | 46°F | 0" | 0" |
| 1995 | 83°F | 61°F | 0.2" | 0" |
| 1994 | 65°F | 52°F | 0.38" | 0" |
| 1993 | 72°F | 59°F | 1.32" | 0" |
| 1992 | 60°F | 46°F | 0.79" | 0" |
| 1991 | 80°F | 61°F | 0" | 0" |
| 1990 | 86°F | 62°F | 0" | 0" |
| 1989 | 66°F | 52°F | 0" | 0" |
| 1988 | 66°F | 48°F | 0" | 0" |
| 1983 | 70°F | 61°F | 0" | 0" |
| 1981 | 71°F | 61°F | 0" | 0" |
| 1980 | 71°F | 56°F | 0.28" | 0" |
| 1979 | 63°F | 53°F | 0" | 0" |
| 1978 | 60°F | 46°F | 0" | 0" |
| 1977 | 76°F | 54°F | 0.84" | 0" |
| 1976 | 73°F | 42°F | 0" | 0" |
| 1975 | 69°F | 49°F | 0" | 0" |
| 1974 | 65°F | 45°F | 0.36" | 0" |
| 1973 | 81°F | 65°F | 1.78" | 0" |
| 1972 | 86°F | 60°F | 0" | 0" |
| 1971 | 67°F | 48°F | 0.05" | 0" |