Weather on March 23 at Isle Royale
Isle Royale National Park
Based on 51 years of data from Houghton, MI
Planning Your Visit
March 23rd in Isle Royale National Park (via Houghton, MI) typically brings cold spring weather, with average highs around 36°F and lows near 19°F. Over 51 years of records, the warmest March 23rd was in 2000 (47°F average), while the coldest was 1974 (0°F) — a 47°F range across recorded history. Precipitation has occurred on 41% of recorded March 23rd dates, with snow falling 24% of the time (heaviest snowfall: 7.6"). The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for March 23rd in Isle Royale? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 37°F | 18°F | 0.1" | -- |
| 2025 | 32°F | 20°F | 0.43" | -- |
| 2024 | 25°F | 13°F | 0" | -- |
| 2023 | 34°F | 21°F | 0" | -- |
| 2022 | 33°F | 31°F | 1.17" | -- |
| 2021 | 43°F | 35°F | 0.03" | -- |
| 2020 | 38°F | 25°F | 0" | -- |
| 2019 | 50°F | 15°F | 0" | -- |
| 2018 | 30°F | 16°F | 0" | -- |
| 2017 | 37°F | 23°F | 0.43" | -- |
| 2016 | 30°F | 20°F | 0" | -- |
| 2015 | 29°F | 12°F | 0" | -- |
| 2014 | 15°F | -8°F | 0" | -- |
| 2013 | 29°F | 14°F | 0.03" | -- |
| 2012 | 49°F | 42°F | 0.03" | -- |
| 2011 | 23°F | 17°F | 0" | -- |
| 2010 | 50°F | 31°F | 0" | -- |
| 2009 | 33°F | 27°F | 0.48" | -- |
| 2008 | 26°F | 1°F | 0" | -- |
| 2007 | 53°F | 32°F | 0" | -- |
| 2006 | 32°F | 23°F | 0.08" | -- |
| 2005 | 42°F | 13°F | 0" | -- |
| 2004 | 30°F | 19°F | 0" | -- |
| 2003 | 52°F | 27°F | 0" | -- |
| 2002 | 26°F | 22°F | 0.03" | 0.2" |
| 2001 | 39°F | 20°F | 0.03" | 0.5" |
| 2000 | 60°F | 34°F | 0" | 0" |
| 1999 | 39°F | 24°F | 0.03" | 0.1" |
| 1998 | 42°F | 20°F | 0" | 0" |
| 1997 | 29°F | 6°F | 0.15" | 1.1" |
| 1996 | 41°F | 13°F | 0" | 0" |
| 1995 | 40°F | 28°F | 0" | 0" |
| 1994 | 48°F | 21°F | 0" | 0" |
| 1993 | 37°F | 14°F | 0" | 0" |
| 1992 | 35°F | 12°F | 0" | 0" |
| 1991 | 35°F | 30°F | 2.41" | 0.4" |
| 1990 | 21°F | 11°F | 0.13" | 1.1" |
| 1989 | 46°F | 25°F | 0" | 0" |
| 1988 | 36°F | 26°F | 0" | 0" |
| 1982 | 45°F | 19°F | 0" | 0" |
| 1981 | 36°F | 25°F | 0" | 0" |
| 1980 | 34°F | 22°F | 0.03" | 0.5" |
| 1979 | 35°F | 19°F | 2.69" | 7.6" |
| 1978 | 31°F | 11°F | 0" | 0" |
| 1977 | 33°F | 12°F | 0.33" | 1.8" |
| 1976 | 51°F | 33°F | 0" | 0" |
| 1975 | 26°F | 22°F | 0.3" | 1.5" |
| 1974 | 8°F | -8°F | 0.13" | 0.5" |
| 1973 | 45°F | 25°F | 0" | 0" |
| 1972 | 18°F | 5°F | 0" | 0" |
| 1971 | 23°F | 1°F | 0.08" | 1.1" |