Weather on May 1 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High54°F
Avg Low35°F
Warmest200164°F
Coldest199632°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

May 1st 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 May 1st was in 2001 (64°F average), while the coldest was 1996 (32°F) — a 32°F range across recorded history. Precipitation has occurred on 46% of recorded May 1st dates, with snow falling 8% of the time (heaviest snowfall: 3.5"). The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.

The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.

Planning for May 1st in Isle Royale? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202550°F39°F0"--
202447°F38°F1.83"--
202339°F34°F1.04"--
202246°F38°F0.61"--
202170°F40°F0"--
202071°F37°F0.36"--
201938°F33°F0.38"--
201879°F42°F0"--
201740°F35°F1.47"--
201654°F34°F0"--
201568°F32°F0"--
201446°F36°F0"--
201354°F33°F0.03"--
201268°F41°F0"--
201147°F34°F0"--
201069°F47°F0"--
200944°F34°F0.03"--
200846°F33°F0"--
200754°F37°F0.03"--
200658°F43°F0.51"--
200544°F33°F0"--
200441°F27°F0"--
200351°F29°F0"0"
200250°F29°F0"0"
200180°F49°F0.36"0"
200065°F42°F0.33"0"
199979°F40°F0"0"
199878°F40°F0"0"
199750°F33°F0"0"
199640°F25°F1.27"3.5"
199551°F37°F0.05"0"
199450°F31°F0"0"
199346°F31°F0.25"0"
199269°F38°F0.18"0"
199138°F33°F0.08"0.2"
199037°F30°F0.15"0.6"
198949°F31°F0"0"
198869°F40°F0"0"
198265°F38°F0"0"
198150°F29°F0"0"
198075°F45°F0"0"
197948°F27°F0"0"
197843°F28°F0"0"
197765°F40°F0.05"0"
197648°F34°F0.36"0"
197550°F38°F0"0"
197445°F29°F0"0"
197341°F35°F1.55"0"
197246°F36°F0.48"0"
197136°F33°F0.61"1.7"

May 1 at Nearby Parks

Holiday Weather at Isle Royale

Official NPS WebsiteVisit nps.gov/isro for park information, alerts, and reservations

Explore More at Isle Royale

See historical weather for other dates

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