Weather on October 19 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
October 19th in Isle Royale National Park (via Houghton, MI) typically brings cool fall weather, with average highs around 51°F and lows near 37°F. Over 50 years of records, the warmest October 19th was in 2021 (61°F average), while the coldest was 1974 (31°F) — a 30°F range across recorded history. Precipitation has occurred on 48% of recorded October 19th dates, with snow falling 2% of the time. The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.5°F warmer on this date compared to 20-30 years ago.
Planning for October 19th 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 | 53°F | 44°F | 0.05" | -- |
| 2024 | 65°F | 53°F | 0.2" | -- |
| 2023 | 53°F | 46°F | 1.04" | -- |
| 2022 | 43°F | 34°F | 0" | -- |
| 2021 | 75°F | 47°F | 0" | -- |
| 2020 | 34°F | 31°F | 0.03" | -- |
| 2019 | 53°F | 43°F | 0.2" | -- |
| 2018 | 61°F | 42°F | 0" | -- |
| 2017 | 62°F | 46°F | 0" | -- |
| 2016 | 51°F | 41°F | 0" | -- |
| 2015 | 62°F | 45°F | 0" | -- |
| 2014 | 48°F | 28°F | 0.03" | -- |
| 2013 | 46°F | 30°F | 0.05" | -- |
| 2012 | 51°F | 41°F | 0.33" | -- |
| 2011 | 45°F | 36°F | 0.05" | -- |
| 2010 | 52°F | 44°F | 0" | -- |
| 2009 | 56°F | 42°F | 0" | -- |
| 2008 | 53°F | 45°F | 0.05" | -- |
| 2007 | 56°F | 48°F | 1.78" | -- |
| 2006 | 38°F | 34°F | 0.03" | -- |
| 2005 | 48°F | 34°F | 0.1" | -- |
| 2004 | 43°F | 36°F | 0" | -- |
| 2003 | 47°F | 33°F | 0" | -- |
| 2002 | 41°F | 26°F | 1.6" | 0" |
| 2001 | 59°F | 33°F | 0.64" | 0" |
| 2000 | 76°F | 34°F | 0" | 0" |
| 1999 | 45°F | 36°F | 0.08" | 0" |
| 1998 | 51°F | 41°F | 0.03" | 0" |
| 1997 | 66°F | 42°F | 0.66" | 0" |
| 1996 | 52°F | 26°F | 0" | 0" |
| 1995 | 50°F | 44°F | 0.71" | 0" |
| 1994 | 70°F | 50°F | 0" | 0" |
| 1993 | 52°F | 35°F | 0" | 0" |
| 1992 | 37°F | 29°F | 0" | 0" |
| 1991 | 41°F | 30°F | 0" | 0" |
| 1990 | 37°F | 28°F | 0" | 0" |
| 1989 | 41°F | 24°F | 0" | 0" |
| 1988 | 46°F | 34°F | 0.58" | 0" |
| 1983 | 47°F | 29°F | 0" | 0" |
| 1981 | 48°F | 27°F | 0" | 0" |
| 1980 | 41°F | 34°F | 0.05" | 0" |
| 1979 | 57°F | 49°F | 1.6" | 0" |
| 1978 | 54°F | 36°F | 0" | 0" |
| 1977 | 52°F | 39°F | 0" | 0" |
| 1976 | 39°F | 28°F | 0.03" | 0.2" |
| 1975 | 55°F | 30°F | 0" | 0" |
| 1974 | 34°F | 28°F | 0" | 0" |
| 1973 | 52°F | 38°F | 0" | 0" |
| 1972 | 36°F | 29°F | 0" | 0" |
| 1971 | 69°F | 52°F | 0.13" | 0" |