Weather on August 14 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
August 14th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 74°F and lows near 54°F. Over 50 years of records, the warmest August 14th was in 1978 (79°F average), while the coldest was 1979 (51°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 20% of August 14th dates historically, with the wettest August 14th recording 0.61" 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 August 14th in Isle Royale? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 74°F | 51°F | 0" | -- |
| 2024 | 84°F | 57°F | 0" | -- |
| 2023 | 72°F | 48°F | 0" | -- |
| 2022 | 67°F | 55°F | 0" | -- |
| 2021 | 77°F | 46°F | 0" | -- |
| 2020 | 86°F | 66°F | 0" | -- |
| 2019 | 71°F | 47°F | 0" | -- |
| 2018 | 79°F | 59°F | 0.15" | -- |
| 2017 | 71°F | 57°F | 0.18" | -- |
| 2016 | 75°F | 58°F | 0" | -- |
| 2015 | 85°F | 60°F | 0" | -- |
| 2014 | 66°F | 47°F | 0" | -- |
| 2013 | 68°F | 47°F | 0" | -- |
| 2012 | 73°F | 51°F | 0" | -- |
| 2011 | 77°F | 48°F | 0" | -- |
| 2010 | 83°F | 65°F | 0.03" | -- |
| 2009 | 83°F | 62°F | 0" | -- |
| 2008 | 74°F | 45°F | 0" | -- |
| 2007 | 79°F | 57°F | 0" | -- |
| 2006 | 73°F | 60°F | 0.46" | -- |
| 2005 | 71°F | 48°F | 0" | -- |
| 2004 | 69°F | 43°F | 0" | -- |
| 2003 | 85°F | 59°F | 0" | 0" |
| 2002 | 77°F | 56°F | 0" | 0" |
| 2001 | 80°F | 48°F | 0" | 0" |
| 2000 | 78°F | 53°F | 0" | 0" |
| 1999 | 74°F | 50°F | 0" | 0" |
| 1998 | 81°F | 64°F | 0" | 0" |
| 1997 | 72°F | 48°F | 0" | 0" |
| 1996 | 65°F | 55°F | 0.61" | 0" |
| 1995 | 82°F | 65°F | 0.1" | 0" |
| 1994 | 66°F | 51°F | 0.13" | 0" |
| 1993 | 73°F | 55°F | 0.15" | 0" |
| 1992 | 68°F | 44°F | 0" | 0" |
| 1991 | 90°F | 67°F | 0" | 0" |
| 1990 | 76°F | 55°F | 0" | 0" |
| 1989 | 63°F | 55°F | 0" | 0" |
| 1988 | 71°F | 63°F | 0.25" | 0" |
| 1983 | 82°F | 65°F | 0" | 0" |
| 1981 | 84°F | 64°F | 0" | 0" |
| 1980 | 66°F | 55°F | 0.05" | 0" |
| 1979 | 58°F | 45°F | 0" | 0" |
| 1978 | 95°F | 62°F | 0" | 0" |
| 1977 | 65°F | 47°F | 0" | 0" |
| 1976 | 62°F | 44°F | 0" | 0" |
| 1975 | 76°F | 57°F | 0" | 0" |
| 1974 | 66°F | 53°F | 0" | 0" |
| 1973 | 67°F | 54°F | 0" | 0" |
| 1972 | 62°F | 53°F | 0" | 0" |
| 1971 | 66°F | 46°F | 0" | 0" |