Weather on July 9 at Isle Royale
Isle Royale National Park
MIMidwest800 ft elevation
Avg High75°F
Avg Low55°F
Warmest198879°F
Coldest199655°F
Based on 50 years of data from Houghton, MI
Planning Your Visit
July 9th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 75°F and lows near 55°F. Over 50 years of records, the warmest July 9th was in 1988 (79°F average), while the coldest was 1996 (55°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 28% of July 9th dates historically, with the wettest July 9th recording 4.32" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for July 9th in Isle Royale? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 73°F | 50°F | 0" | -- |
| 2024 | 78°F | 57°F | 0" | -- |
| 2023 | 81°F | 49°F | 0.51" | -- |
| 2022 | 77°F | 45°F | 0" | -- |
| 2021 | 76°F | 42°F | 0" | -- |
| 2020 | 82°F | 67°F | 1.09" | -- |
| 2019 | 86°F | 59°F | 0" | -- |
| 2018 | 81°F | 59°F | 0" | -- |
| 2017 | 71°F | 52°F | 0.03" | -- |
| 2016 | 73°F | 52°F | 0" | -- |
| 2015 | 74°F | 54°F | 0" | -- |
| 2014 | 65°F | 50°F | 0.05" | -- |
| 2013 | 72°F | 55°F | 0.81" | -- |
| 2012 | 75°F | 52°F | 0" | -- |
| 2011 | 75°F | 51°F | 0.13" | -- |
| 2010 | 75°F | 56°F | 0" | -- |
| 2009 | 81°F | 50°F | 0" | -- |
| 2008 | 67°F | 53°F | 0" | -- |
| 2007 | 78°F | 52°F | 0" | -- |
| 2006 | 73°F | 48°F | 0" | -- |
| 2005 | 83°F | 59°F | 0" | -- |
| 2004 | 72°F | 45°F | 0" | -- |
| 2003 | 67°F | 49°F | 0" | 0" |
| 2002 | 81°F | 61°F | 0" | 0" |
| 2001 | 88°F | 63°F | 0.03" | 0" |
| 2000 | 82°F | 65°F | 0.03" | 0" |
| 1999 | 58°F | 52°F | 2.03" | 0" |
| 1998 | 74°F | 57°F | 0" | 0" |
| 1997 | 75°F | 49°F | 0" | 0" |
| 1996 | 64°F | 46°F | 0" | 0" |
| 1995 | 75°F | 56°F | 0" | 0" |
| 1994 | 68°F | 52°F | 1.88" | 0" |
| 1993 | 72°F | 59°F | 0.18" | 0" |
| 1992 | 73°F | 55°F | 0" | 0" |
| 1991 | 75°F | 53°F | 0" | 0" |
| 1990 | 78°F | 56°F | 0" | 0" |
| 1989 | 86°F | 64°F | 0" | 0" |
| 1988 | 90°F | 69°F | 0" | 0" |
| 1983 | 71°F | 55°F | 0" | 0" |
| 1981 | 79°F | 58°F | 0" | 0" |
| 1980 | 81°F | 60°F | 0" | 0" |
| 1979 | 82°F | 60°F | 0" | 0" |
| 1978 | 65°F | 50°F | 0.74" | 0" |
| 1977 | 65°F | 49°F | 0" | 0" |
| 1976 | 71°F | 61°F | 4.32" | 0" |
| 1975 | 68°F | 48°F | 0" | 0" |
| 1974 | 82°F | 60°F | 0.43" | 0" |
| 1973 | 76°F | 61°F | 0" | 0" |
| 1972 | 71°F | 54°F | 0" | 0" |
| 1971 | 75°F | 55°F | 0" | 0" |
July 9 at Nearby Parks
Holiday Weather at Isle Royale
Official NPS WebsiteVisit nps.gov/isro for park information, alerts, and reservations
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