Weather on August 13 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
August 13th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 73°F and lows near 55°F. Over 50 years of records, the warmest August 13th was in 2015 (77°F average), while the coldest was 1971 (50°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 28% of August 13th dates historically, with the wettest August 13th recording 4.6" of rain. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for August 13th in Isle Royale? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 74°F | 54°F | 0" | -- |
| 2024 | 83°F | 54°F | 0" | -- |
| 2023 | 71°F | 50°F | 0" | -- |
| 2022 | 63°F | 59°F | 0.23" | -- |
| 2021 | 69°F | 48°F | 0" | -- |
| 2020 | 79°F | 65°F | 0" | -- |
| 2019 | 71°F | 47°F | 0.33" | -- |
| 2018 | 89°F | 60°F | 0" | -- |
| 2017 | 78°F | 55°F | 0" | -- |
| 2016 | 68°F | 61°F | 0.1" | -- |
| 2015 | 84°F | 69°F | 0" | -- |
| 2014 | 64°F | 45°F | 0" | -- |
| 2013 | 62°F | 47°F | 0" | -- |
| 2012 | 74°F | 58°F | 0" | -- |
| 2011 | 73°F | 51°F | 0" | -- |
| 2010 | 80°F | 66°F | 3.4" | -- |
| 2009 | 88°F | 63°F | 0" | -- |
| 2008 | 74°F | 49°F | 0" | -- |
| 2007 | 75°F | 45°F | 0" | -- |
| 2006 | 79°F | 59°F | 0" | -- |
| 2005 | 71°F | 48°F | 0" | -- |
| 2004 | 67°F | 43°F | 0" | -- |
| 2003 | 81°F | 53°F | 0" | 0" |
| 2002 | 79°F | 63°F | 0.1" | 0" |
| 2001 | 73°F | 51°F | 0" | 0" |
| 2000 | 78°F | 67°F | 0" | 0" |
| 1999 | 68°F | 57°F | 4.6" | 0" |
| 1998 | 83°F | 58°F | 0" | 0" |
| 1997 | 63°F | 46°F | 0" | 0" |
| 1996 | 76°F | 54°F | 0" | 0" |
| 1995 | 75°F | 60°F | 0.81" | 0" |
| 1994 | 76°F | 60°F | 0" | 0" |
| 1993 | 74°F | 58°F | 0" | 0" |
| 1992 | 64°F | 40°F | 0" | 0" |
| 1991 | 81°F | 65°F | 0" | 0" |
| 1990 | 71°F | 45°F | 0" | 0" |
| 1989 | 74°F | 61°F | 0.89" | 0" |
| 1988 | 77°F | 67°F | 3.81" | 0" |
| 1983 | 82°F | 58°F | 0" | 0" |
| 1981 | 68°F | 59°F | 0" | 0" |
| 1980 | 70°F | 60°F | 2.87" | 0" |
| 1979 | 67°F | 47°F | 0.1" | 0" |
| 1978 | 85°F | 63°F | 0" | 0" |
| 1977 | 63°F | 52°F | 0" | 0" |
| 1976 | 62°F | 50°F | 0.03" | 0" |
| 1975 | 73°F | 60°F | 0" | 0" |
| 1974 | 67°F | 49°F | 0" | 0" |
| 1973 | 68°F | 56°F | 0.48" | 0" |
| 1972 | 80°F | 58°F | 0" | 0" |
| 1971 | 55°F | 45°F | 0.64" | 0" |