Weather on October 9 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
October 9th in Isle Royale National Park (via Houghton, MI) typically brings cool fall weather, with average highs around 56°F and lows near 39°F. Over 50 years of records, the warmest October 9th was in 2021 (67°F average), while the coldest was 1993 (33°F) — a 34°F range across recorded history. Precipitation has occurred on 42% of recorded October 9th dates, with snow falling 2% of the time. The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
Planning for October 9th in Isle Royale? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 65°F | 35°F | 0" | -- |
| 2024 | 59°F | 29°F | 0" | -- |
| 2023 | 44°F | 39°F | 0.79" | -- |
| 2022 | 51°F | 28°F | 0" | -- |
| 2021 | 74°F | 60°F | 0" | -- |
| 2020 | 75°F | 43°F | 1.37" | -- |
| 2019 | 72°F | 49°F | 0" | -- |
| 2018 | 43°F | 40°F | 2.18" | -- |
| 2017 | 59°F | 39°F | 0" | -- |
| 2016 | 50°F | 32°F | 0.03" | -- |
| 2015 | 56°F | 40°F | 0.03" | -- |
| 2014 | 46°F | 37°F | 0" | -- |
| 2013 | 74°F | 57°F | 0" | -- |
| 2012 | 48°F | 37°F | 0.08" | -- |
| 2011 | 71°F | 53°F | 0" | -- |
| 2010 | 59°F | 50°F | 0" | -- |
| 2009 | 47°F | 28°F | 0" | -- |
| 2008 | 54°F | 47°F | 0" | -- |
| 2007 | 51°F | 42°F | 1.78" | -- |
| 2006 | 48°F | 29°F | 0" | -- |
| 2005 | 55°F | 32°F | 0" | -- |
| 2004 | 56°F | 37°F | 0.33" | -- |
| 2003 | 77°F | 54°F | 0" | -- |
| 2002 | 50°F | 42°F | 0.25" | 0" |
| 2001 | 70°F | 49°F | 0.94" | 0" |
| 2000 | 57°F | 36°F | 0" | 0" |
| 1999 | 68°F | 37°F | 0" | 0" |
| 1998 | 68°F | 36°F | 0" | 0" |
| 1997 | 79°F | 53°F | 0.08" | 0" |
| 1996 | 53°F | 38°F | 0.2" | 0" |
| 1995 | 54°F | 35°F | 0.03" | 0" |
| 1994 | 47°F | 35°F | 0.61" | 0" |
| 1993 | 36°F | 31°F | 0" | 0" |
| 1992 | 56°F | 39°F | 0.99" | 0" |
| 1991 | 54°F | 40°F | 0" | 0" |
| 1990 | 47°F | 30°F | 0" | 0" |
| 1989 | 52°F | 24°F | 0.2" | 0" |
| 1988 | 60°F | 39°F | 0.03" | 0" |
| 1983 | 56°F | 33°F | 0" | 0" |
| 1981 | 50°F | 39°F | 0" | 0" |
| 1980 | 49°F | 29°F | 0" | 0" |
| 1979 | 41°F | 33°F | 0.61" | 0.5" |
| 1978 | 60°F | 38°F | 0" | 0" |
| 1977 | 46°F | 37°F | 0.25" | 0" |
| 1976 | 47°F | 38°F | 0" | 0" |
| 1975 | 62°F | 47°F | 0.03" | 0" |
| 1974 | 56°F | 39°F | 0" | 0" |
| 1973 | 67°F | 52°F | 2.51" | 0" |
| 1972 | 42°F | 29°F | 0" | 0" |
| 1971 | 50°F | 40°F | 0" | 0" |