Weather on July 23 at Isle Royale
Isle Royale National Park
MIMidwest800 ft elevation
Avg High76°F
Avg Low56°F
Warmest199979°F
Coldest200451°F
Based on 50 years of data from Houghton, MI
Planning Your Visit
July 23rd in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 76°F and lows near 56°F. Over 50 years of records, the warmest July 23rd was in 1999 (79°F average), while the coldest was 2004 (51°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 22% of July 23rd dates historically, with the wettest July 23rd recording 3.4" 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 23rd in Isle Royale? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 82°F | 68°F | 1.88" | -- |
| 2024 | 65°F | 56°F | 0" | -- |
| 2023 | 78°F | 58°F | 0" | -- |
| 2022 | 80°F | 60°F | 0.03" | -- |
| 2021 | 85°F | 61°F | 0.58" | -- |
| 2020 | 75°F | 50°F | 0" | -- |
| 2019 | 75°F | 55°F | 0" | -- |
| 2018 | 78°F | 55°F | 0" | -- |
| 2017 | 65°F | 47°F | 0.03" | -- |
| 2016 | 78°F | 63°F | 0" | -- |
| 2015 | 82°F | 49°F | 0" | -- |
| 2014 | 70°F | 49°F | 0" | -- |
| 2013 | 65°F | 51°F | 0" | -- |
| 2012 | 80°F | 63°F | 0" | -- |
| 2011 | 66°F | 54°F | 0.05" | -- |
| 2010 | 75°F | 60°F | 0" | -- |
| 2009 | 76°F | 49°F | 0" | -- |
| 2008 | 78°F | 51°F | 0" | -- |
| 2007 | 81°F | 63°F | 0" | -- |
| 2006 | 64°F | 47°F | 0.61" | -- |
| 2005 | 78°F | 50°F | 0.03" | -- |
| 2004 | 63°F | 40°F | 0" | -- |
| 2003 | 73°F | 53°F | 0" | 0" |
| 2002 | 74°F | 46°F | 0" | 0" |
| 2001 | 90°F | 69°F | 0" | 0" |
| 2000 | 79°F | 48°F | 0.18" | 0" |
| 1999 | 89°F | 68°F | 0.2" | 0" |
| 1998 | 74°F | 58°F | 0" | 0" |
| 1997 | 75°F | 56°F | 0" | 0" |
| 1996 | 74°F | 57°F | 0" | 0" |
| 1995 | 81°F | 56°F | 0" | 0" |
| 1994 | 77°F | 59°F | 0" | 0" |
| 1993 | 77°F | 54°F | 0" | 0" |
| 1992 | 73°F | 53°F | 0" | 0" |
| 1991 | 73°F | 58°F | 0" | 0" |
| 1990 | 74°F | 55°F | 0" | 0" |
| 1989 | 84°F | 62°F | 0" | 0" |
| 1988 | 86°F | 60°F | 0" | 0" |
| 1983 | 77°F | 60°F | 0" | 0" |
| 1981 | 75°F | 51°F | 0" | 0" |
| 1980 | 78°F | 55°F | 0" | 0" |
| 1979 | 93°F | 57°F | 0" | 0" |
| 1978 | 71°F | 53°F | 0" | 0" |
| 1977 | 84°F | 62°F | 0" | 0" |
| 1976 | 78°F | 63°F | 0" | 0" |
| 1975 | 70°F | 58°F | 3.4" | 0" |
| 1974 | 81°F | 58°F | 0" | 0" |
| 1973 | 74°F | 56°F | 0" | 0" |
| 1972 | 78°F | 60°F | 0.03" | 0" |
| 1971 | 73°F | 52°F | 0" | 0" |
July 23 at Nearby Parks
Holiday Weather at Isle Royale
Official NPS WebsiteVisit nps.gov/isro for park information, alerts, and reservations
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