Weather on September 2 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
September 2nd in Isle Royale National Park (via Houghton, MI) typically brings pleasant fall weather, with average highs around 73°F and lows near 53°F. Over 50 years of records, the warmest September 2nd was in 2023 (78°F average), while the coldest was 1974 (48°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 30% of September 2nd dates historically, with the wettest September 2nd recording 4.24" of rain. The last decade has been 3.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.0°F cooler on this date compared to 20-30 years ago.
Planning for September 2nd 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 | 78°F | 53°F | 0.13" | -- |
| 2024 | 72°F | 46°F | 0" | -- |
| 2023 | 87°F | 70°F | 0" | -- |
| 2022 | 90°F | 59°F | 0" | -- |
| 2021 | 74°F | 43°F | 0" | -- |
| 2020 | 68°F | 53°F | 0" | -- |
| 2019 | 62°F | 48°F | 0.03" | -- |
| 2018 | 75°F | 61°F | 0.89" | -- |
| 2017 | 65°F | 52°F | 1.6" | -- |
| 2016 | 74°F | 43°F | 0" | -- |
| 2015 | 71°F | 57°F | 0.23" | -- |
| 2014 | 73°F | 54°F | 0" | -- |
| 2013 | 61°F | 50°F | 0" | -- |
| 2012 | 77°F | 50°F | 0" | -- |
| 2011 | 75°F | 55°F | 0" | -- |
| 2010 | 69°F | 47°F | 1.75" | -- |
| 2009 | 70°F | 47°F | 0" | -- |
| 2008 | 88°F | 59°F | 1.73" | -- |
| 2007 | 79°F | 54°F | 0" | -- |
| 2006 | 72°F | 47°F | 0" | -- |
| 2005 | 65°F | 56°F | 0" | -- |
| 2004 | 83°F | 55°F | 0" | -- |
| 2003 | 81°F | 56°F | 0" | -- |
| 2002 | 80°F | 60°F | 4.24" | 0" |
| 2001 | 86°F | 57°F | 0" | 0" |
| 2000 | 61°F | 53°F | 0.05" | 0" |
| 1999 | 85°F | 63°F | 0.08" | 0" |
| 1998 | 73°F | 45°F | 0" | 0" |
| 1997 | 80°F | 50°F | 0" | 0" |
| 1996 | 83°F | 60°F | 0" | 0" |
| 1995 | 76°F | 56°F | 0" | 0" |
| 1994 | 65°F | 47°F | 0.03" | 0" |
| 1993 | 68°F | 55°F | 0.58" | 0" |
| 1992 | 66°F | 56°F | 1.04" | 0" |
| 1991 | 80°F | 53°F | 0" | 0" |
| 1990 | 68°F | 49°F | 0" | 0" |
| 1989 | 71°F | 52°F | 0" | 0" |
| 1988 | 76°F | 58°F | 0" | 0" |
| 1983 | 83°F | 65°F | 0" | 0" |
| 1981 | 61°F | 47°F | 0" | 0" |
| 1980 | 66°F | 54°F | 0" | 0" |
| 1979 | 66°F | 49°F | 0.3" | 0" |
| 1978 | 80°F | 55°F | 0" | 0" |
| 1977 | 63°F | 53°F | 0.28" | 0" |
| 1976 | 62°F | 33°F | 0" | 0" |
| 1975 | 60°F | 48°F | 0" | 0" |
| 1974 | 54°F | 42°F | 0" | 0" |
| 1973 | 80°F | 70°F | 0" | 0" |
| 1972 | 60°F | 42°F | 0" | 0" |
| 1971 | 90°F | 65°F | 0" | 0" |