Weather on October 4 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High57°F
Avg Low42°F
Warmest202572°F
Coldest198032°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

October 4th in Isle Royale National Park (via Houghton, MI) typically brings cool fall weather, with average highs around 57°F and lows near 42°F. Over 50 years of records, the warmest October 4th was in 2025 (72°F average), while the coldest was 1980 (32°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 34% of October 4th dates historically, with the wettest October 4th recording 3.53" of rain. The last decade has been 7.5°F warmer on this date compared to 20-30 years ago.

The last decade has been 7.5°F warmer on this date compared to 20-30 years ago.

Planning for October 4th in Isle Royale? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202587°F58°F0"--
202464°F37°F0"--
202377°F60°F0.05"--
202268°F56°F0"--
202164°F49°F0.03"--
202048°F33°F0.03"--
201947°F35°F0"--
201849°F31°F0"--
201757°F48°F0"--
201669°F50°F0"--
201554°F31°F0"--
201442°F37°F0.99"--
201358°F52°F0.05"--
201272°F42°F0.03"--
201175°F44°F0"--
201062°F34°F0"--
200951°F46°F0.41"--
200854°F38°F0.05"--
200771°F50°F0"--
200655°F32°F0"--
200571°F52°F3.53"--
200441°F33°F0"--
200340°F37°F0"--
200255°F48°F3.25"0"
200159°F39°F0"0"
200056°F32°F0"0"
199953°F24°F0"0"
199856°F32°F0"0"
199771°F53°F0"0"
199658°F31°F0"0"
199559°F45°F0.03"0"
199450°F41°F0"0"
199346°F39°F0"0"
199260°F39°F0"0"
199154°F37°F0"0"
199056°F45°F0"0"
198953°F36°F0"0"
198842°F36°F1.12"0"
198350°F45°F0"0"
198147°F43°F0.23"0"
198037°F27°F0"0"
197948°F41°F0"0"
197854°F47°F0.33"0"
197762°F44°F0.3"0"
197674°F48°F0.41"0"
197565°F40°F0"0"
197455°F46°F0"0"
197353°F45°F0.08"0"
197266°F51°F0"0"
197154°F47°F0"0"

October 4 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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