Weather on September 26 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
September 26th in Isle Royale National Park (via Houghton, MI) typically brings mild fall weather, with average highs around 62°F and lows near 46°F. Over 50 years of records, the warmest September 26th was in 2008 (69°F average), while the coldest was 1991 (37°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 52% of September 26th dates historically, with the wettest September 26th recording 3.51" 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 September 26th 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 | 65°F | 47°F | 0" | -- |
| 2024 | 79°F | 47°F | 0" | -- |
| 2023 | 66°F | 56°F | 0" | -- |
| 2022 | 53°F | 44°F | 0.86" | -- |
| 2021 | 65°F | 51°F | 0.03" | -- |
| 2020 | 66°F | 52°F | 0.69" | -- |
| 2019 | 60°F | 50°F | 0" | -- |
| 2018 | 55°F | 44°F | 0.1" | -- |
| 2017 | 62°F | 55°F | 0.13" | -- |
| 2016 | 59°F | 51°F | 1.55" | -- |
| 2015 | 75°F | 55°F | 0" | -- |
| 2014 | 78°F | 49°F | 0" | -- |
| 2013 | 67°F | 42°F | 0" | -- |
| 2012 | 54°F | 34°F | 0" | -- |
| 2011 | 70°F | 50°F | 0.3" | -- |
| 2010 | 57°F | 36°F | 0" | -- |
| 2009 | 63°F | 50°F | 0.28" | -- |
| 2008 | 82°F | 56°F | 0" | -- |
| 2007 | 57°F | 46°F | 0.03" | -- |
| 2006 | 59°F | 41°F | 0.71" | -- |
| 2005 | 59°F | 46°F | 0.79" | -- |
| 2004 | 74°F | 56°F | 0" | -- |
| 2003 | 52°F | 42°F | 0.76" | -- |
| 2002 | 52°F | 43°F | 0.28" | 0" |
| 2001 | 59°F | 47°F | 0" | 0" |
| 2000 | 65°F | 45°F | 0" | 0" |
| 1999 | 76°F | 54°F | 0" | 0" |
| 1998 | 68°F | 49°F | 1.22" | 0" |
| 1997 | 76°F | 44°F | 0" | 0" |
| 1996 | 62°F | 50°F | 0.41" | 0" |
| 1995 | 60°F | 41°F | 0.03" | 0" |
| 1994 | 49°F | 41°F | 0.41" | 0" |
| 1993 | 64°F | 45°F | 0.38" | 0" |
| 1992 | 61°F | 52°F | 1.7" | 0" |
| 1991 | 40°F | 35°F | 0" | 0" |
| 1990 | 70°F | 48°F | 0" | 0" |
| 1989 | 45°F | 33°F | 0" | 0" |
| 1988 | 57°F | 44°F | 0.89" | 0" |
| 1983 | 67°F | 52°F | 0" | 0" |
| 1981 | 66°F | 53°F | 0.2" | 0" |
| 1980 | 50°F | 34°F | 0" | 0" |
| 1979 | 65°F | 45°F | 0" | 0" |
| 1978 | 71°F | 46°F | 0.23" | 0" |
| 1977 | 56°F | 50°F | 0.3" | 0" |
| 1976 | 48°F | 40°F | 0.13" | 0" |
| 1975 | 59°F | 35°F | 0" | 0" |
| 1974 | 69°F | 44°F | 0" | 0" |
| 1973 | 64°F | 52°F | 3.51" | 0" |
| 1972 | 46°F | 40°F | 0.15" | 0" |
| 1971 | 58°F | 48°F | 0" | 0" |