Weather on October 5 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
October 5th in Isle Royale National Park (via Houghton, MI) typically brings cool fall weather, with average highs around 57°F and lows near 41°F. Over 50 years of records, the warmest October 5th was in 2025 (74°F average), while the coldest was 2003 (36°F) — a 38°F range across recorded history. Precipitation has occurred on 58% of recorded October 5th dates, with snow falling 2% of the time. The last decade has been 6.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.5°F warmer on this date compared to 20-30 years ago.
Planning for October 5th 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 | 84°F | 64°F | 0.13" | -- |
| 2024 | 72°F | 38°F | 0.56" | -- |
| 2023 | 64°F | 50°F | 1.04" | -- |
| 2022 | 69°F | 53°F | 0.08" | -- |
| 2021 | 69°F | 46°F | 0" | -- |
| 2020 | 66°F | 40°F | 0.03" | -- |
| 2019 | 52°F | 37°F | 0.18" | -- |
| 2018 | 45°F | 33°F | 0.56" | -- |
| 2017 | 58°F | 39°F | 0" | -- |
| 2016 | 66°F | 54°F | 0.89" | -- |
| 2015 | 58°F | 34°F | 0" | -- |
| 2014 | 42°F | 35°F | 0.25" | -- |
| 2013 | 52°F | 49°F | 1.19" | -- |
| 2012 | 42°F | 34°F | 0.74" | -- |
| 2011 | 64°F | 50°F | 0" | -- |
| 2010 | 69°F | 39°F | 0" | -- |
| 2009 | 55°F | 46°F | 0.13" | -- |
| 2008 | 54°F | 42°F | 0" | -- |
| 2007 | 59°F | 51°F | 1.68" | -- |
| 2006 | 56°F | 32°F | 0" | -- |
| 2005 | 54°F | 47°F | 5.16" | -- |
| 2004 | 62°F | 28°F | 0" | -- |
| 2003 | 46°F | 27°F | 0" | -- |
| 2002 | 54°F | 41°F | 1.37" | 0" |
| 2001 | 56°F | 40°F | 1.07" | 0" |
| 2000 | 51°F | 30°F | 0" | 0" |
| 1999 | 51°F | 39°F | 0.08" | 0" |
| 1998 | 56°F | 51°F | 0.18" | 0" |
| 1997 | 74°F | 49°F | 0.89" | 0" |
| 1996 | 71°F | 45°F | 0" | 0" |
| 1995 | 56°F | 44°F | 0" | 0" |
| 1994 | 60°F | 34°F | 0" | 0" |
| 1993 | 54°F | 35°F | 0" | 0" |
| 1992 | 63°F | 38°F | 0" | 0" |
| 1991 | 46°F | 33°F | 1.27" | 0.3" |
| 1990 | 59°F | 45°F | 0" | 0" |
| 1989 | 47°F | 40°F | 0.66" | 0" |
| 1988 | 43°F | 33°F | 0" | 0" |
| 1983 | 54°F | 46°F | 0.25" | 0" |
| 1981 | 53°F | 45°F | 0.25" | 0" |
| 1980 | 53°F | 21°F | 0" | 0" |
| 1979 | 55°F | 36°F | 0" | 0" |
| 1978 | 53°F | 43°F | 0.18" | 0" |
| 1977 | 50°F | 44°F | 0.08" | 0" |
| 1976 | 52°F | 39°F | 0" | 0" |
| 1975 | 65°F | 53°F | 0.03" | 0" |
| 1974 | 59°F | 41°F | 0.15" | 0" |
| 1973 | 63°F | 43°F | 0" | 0" |
| 1972 | 56°F | 47°F | 0.41" | 0" |
| 1971 | 52°F | 45°F | 0.48" | 0" |