Weather on April 30 at Isle Royale
Isle Royale National Park
Based on 50 years of data from Houghton, MI
Planning Your Visit
April 30th in Isle Royale National Park (via Houghton, MI) typically brings cool spring weather, with average highs around 54°F and lows near 35°F. Over 50 years of records, the warmest April 30th was in 2001 (70°F average), while the coldest was 1978 (31°F) — a 39°F range across recorded history. Precipitation has occurred on 32% of recorded April 30th dates, with snow falling 4% of the time (heaviest snowfall: 5"). The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
Planning for April 30th 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 | 46°F | 23°F | 0" | -- |
| 2024 | 51°F | 38°F | 0" | -- |
| 2023 | 39°F | 35°F | 0.2" | -- |
| 2022 | 50°F | 39°F | 0.41" | -- |
| 2021 | 49°F | 35°F | 0.05" | -- |
| 2020 | 56°F | 38°F | 0" | -- |
| 2019 | 41°F | 34°F | 0" | -- |
| 2018 | 76°F | 37°F | 0" | -- |
| 2017 | 47°F | 32°F | 0" | -- |
| 2016 | 51°F | 38°F | 0" | -- |
| 2015 | 53°F | 33°F | 0" | -- |
| 2014 | 42°F | 35°F | 0.25" | -- |
| 2013 | 67°F | 41°F | 0.25" | -- |
| 2012 | 49°F | 41°F | 0" | -- |
| 2011 | 58°F | 36°F | 0.18" | -- |
| 2010 | 61°F | 41°F | 3.56" | -- |
| 2009 | 55°F | 39°F | 1.91" | -- |
| 2008 | 51°F | 29°F | 0" | -- |
| 2007 | 54°F | 34°F | 0" | -- |
| 2006 | 54°F | 40°F | 0.38" | -- |
| 2005 | 44°F | 27°F | 0" | -- |
| 2004 | 49°F | 29°F | 0" | -- |
| 2003 | 54°F | 27°F | 0" | -- |
| 2002 | 46°F | 32°F | 0" | -- |
| 2001 | 83°F | 57°F | 0" | 0" |
| 2000 | 69°F | 29°F | 0" | 0" |
| 1999 | 74°F | 36°F | 0" | 0" |
| 1998 | 79°F | 39°F | 0" | 0" |
| 1997 | 67°F | 31°F | 0" | 0" |
| 1996 | 45°F | 29°F | 2.03" | 5" |
| 1995 | 53°F | 31°F | 0.03" | 0" |
| 1994 | 45°F | 28°F | 0" | 0" |
| 1993 | 43°F | 31°F | 0" | 0" |
| 1992 | 43°F | 35°F | 0" | 0" |
| 1991 | 54°F | 36°F | 1.4" | 0" |
| 1990 | 51°F | 34°F | 0.18" | 0" |
| 1989 | 35°F | 33°F | 0.43" | 1.3" |
| 1988 | 66°F | 36°F | 0" | 0" |
| 1982 | 64°F | 38°F | 0" | 0" |
| 1981 | 44°F | 30°F | 0" | 0" |
| 1980 | 74°F | 43°F | 0" | 0" |
| 1979 | 44°F | 28°F | 0" | 0" |
| 1978 | 36°F | 27°F | 0" | 0" |
| 1977 | 76°F | 45°F | 0" | 0" |
| 1976 | 58°F | 40°F | 0.25" | 0" |
| 1975 | 58°F | 35°F | 0" | 0" |
| 1974 | 53°F | 30°F | 0" | 0" |
| 1973 | 51°F | 35°F | 0" | 0" |
| 1972 | 48°F | 39°F | 0" | 0" |
| 1971 | 48°F | 27°F | 0.1" | 0" |