Weather on September 24 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
September 24th in Isle Royale National Park (via Houghton, MI) typically brings mild fall weather, with average highs around 64°F and lows near 45°F. Over 50 years of records, the warmest September 24th was in 2017 (78°F average), while the coldest was 2002 (44°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 38% of September 24th dates historically, with the wettest September 24th recording 4.01" of rain. The last decade has been 8.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.0°F warmer on this date compared to 20-30 years ago.
Planning for September 24th 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 | 68°F | 50°F | 0" | -- |
| 2024 | 66°F | 43°F | 0" | -- |
| 2023 | 69°F | 57°F | 0" | -- |
| 2022 | 55°F | 48°F | 0.23" | -- |
| 2021 | 72°F | 41°F | 0.99" | -- |
| 2020 | 60°F | 53°F | 0" | -- |
| 2019 | 76°F | 45°F | 0.25" | -- |
| 2018 | 69°F | 48°F | 0" | -- |
| 2017 | 89°F | 66°F | 0.03" | -- |
| 2016 | 66°F | 51°F | 0" | -- |
| 2015 | 63°F | 55°F | 0.03" | -- |
| 2014 | 72°F | 44°F | 0" | -- |
| 2013 | 67°F | 43°F | 0" | -- |
| 2012 | 62°F | 35°F | 0" | -- |
| 2011 | 56°F | 46°F | 0" | -- |
| 2010 | 60°F | 42°F | 4.01" | -- |
| 2009 | 73°F | 45°F | 0" | -- |
| 2008 | 69°F | 48°F | 0.23" | -- |
| 2007 | 86°F | 60°F | 1.14" | -- |
| 2006 | 52°F | 41°F | 0" | -- |
| 2005 | 66°F | 46°F | 0.28" | -- |
| 2004 | 61°F | 53°F | 0.08" | -- |
| 2003 | 57°F | 41°F | 0.18" | -- |
| 2002 | 54°F | 35°F | 1.45" | 0" |
| 2001 | 52°F | 43°F | 0.1" | 0" |
| 2000 | 55°F | 35°F | 0" | 0" |
| 1999 | 60°F | 37°F | 0" | 0" |
| 1998 | 68°F | 52°F | 0.13" | 0" |
| 1997 | 74°F | 39°F | 0" | 0" |
| 1996 | 60°F | 48°F | 0.66" | 0" |
| 1995 | 58°F | 40°F | 0" | 0" |
| 1994 | 73°F | 55°F | 0" | 0" |
| 1993 | 63°F | 46°F | 0" | 0" |
| 1992 | 73°F | 45°F | 0" | 0" |
| 1991 | 55°F | 38°F | 0" | 0" |
| 1990 | 70°F | 49°F | 0" | 0" |
| 1989 | 62°F | 32°F | 0" | 0" |
| 1988 | 69°F | 45°F | 0" | 0" |
| 1983 | 64°F | 36°F | 0" | 0" |
| 1981 | 59°F | 49°F | 0" | 0" |
| 1980 | 56°F | 41°F | 0.79" | 0" |
| 1979 | 65°F | 50°F | 0.03" | 0" |
| 1978 | 63°F | 46°F | 0" | 0" |
| 1977 | 53°F | 51°F | 3.12" | 0" |
| 1976 | 57°F | 37°F | 0" | 0" |
| 1975 | 55°F | 38°F | 0" | 0" |
| 1974 | 66°F | 40°F | 1.07" | 0" |
| 1973 | 63°F | 47°F | 0" | 0" |
| 1972 | 68°F | 49°F | 0" | 0" |
| 1971 | 61°F | 35°F | 0" | 0" |