Weather on March 12 at Isle Royale
Isle Royale National Park
Based on 51 years of data from Houghton, MI
Planning Your Visit
March 12th in Isle Royale National Park (via Houghton, MI) typically brings cold spring weather, with average highs around 33°F and lows near 17°F. Over 51 years of records, the warmest March 12th was in 1995 (48°F average), while the coldest was 2009 (3°F) — a 45°F range across recorded history. Precipitation has occurred on 45% of recorded March 12th dates, with snow falling 16% of the time (heaviest snowfall: 15.5"). The last decade has been 7.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.8°F warmer on this date compared to 20-30 years ago.
Planning for March 12th in Isle Royale? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 30°F | 15°F | 0" | -- |
| 2025 | 37°F | 20°F | 0" | -- |
| 2024 | 57°F | 32°F | 0" | -- |
| 2023 | 28°F | 23°F | 0.03" | -- |
| 2022 | 12°F | 4°F | 0.1" | -- |
| 2021 | 36°F | 12°F | 0" | -- |
| 2020 | 38°F | 33°F | 1.57" | -- |
| 2019 | 49°F | 10°F | 0" | -- |
| 2018 | 31°F | 21°F | 0.05" | -- |
| 2017 | 17°F | 3°F | 0" | -- |
| 2016 | 56°F | 41°F | 0" | -- |
| 2015 | 42°F | 31°F | 0" | -- |
| 2014 | 14°F | -8°F | 0" | -- |
| 2013 | 20°F | 15°F | 0.18" | -- |
| 2012 | 50°F | 38°F | 0.46" | -- |
| 2011 | 33°F | 29°F | 0.25" | -- |
| 2010 | 40°F | 36°F | 0.15" | -- |
| 2009 | 10°F | -5°F | 0.03" | -- |
| 2008 | 31°F | 14°F | 0.03" | -- |
| 2007 | 43°F | 35°F | 0.03" | -- |
| 2006 | 42°F | 30°F | 0" | -- |
| 2005 | 15°F | 6°F | 0" | -- |
| 2004 | 15°F | -2°F | 0" | -- |
| 2003 | 18°F | -4°F | 0.03" | -- |
| 2002 | 40°F | 4°F | 0.03" | 0.1" |
| 2001 | 27°F | 9°F | 1.37" | 4.5" |
| 2000 | 35°F | 20°F | 0.08" | 1" |
| 1999 | 40°F | 10°F | 0" | 0" |
| 1998 | 34°F | 8°F | 0" | 0" |
| 1997 | 32°F | 2°F | 0" | 0" |
| 1996 | 53°F | 33°F | 0" | 0" |
| 1995 | 68°F | 29°F | 0" | 0" |
| 1994 | 37°F | 27°F | 0" | 0" |
| 1993 | 21°F | 3°F | 0.13" | 1.5" |
| 1992 | 15°F | 10°F | 0" | 0" |
| 1991 | 28°F | 18°F | 0" | 0" |
| 1990 | 49°F | 33°F | 0.91" | 0" |
| 1989 | 24°F | 10°F | 0" | 0" |
| 1988 | 22°F | 17°F | 2.72" | 15.5" |
| 1982 | 40°F | 16°F | 0.05" | 0" |
| 1981 | 40°F | 22°F | 0" | 0" |
| 1980 | 20°F | -8°F | 0.1" | 0.4" |
| 1979 | 26°F | 2°F | 0" | 0" |
| 1978 | 37°F | 18°F | 0" | 0" |
| 1977 | 40°F | 35°F | 4.95" | 0" |
| 1976 | 26°F | -- | 2.11" | 11" |
| 1975 | 30°F | 16°F | 0.76" | 3.9" |
| 1974 | 26°F | 16°F | 0" | 0" |
| 1973 | 39°F | 29°F | 0" | 0" |
| 1972 | 34°F | 17°F | 0" | 0" |
| 1971 | 40°F | 14°F | 0" | 0" |