Weather on October 17 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High51°F
Avg Low37°F
Warmest199865°F
Coldest197226°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

October 17th in Isle Royale National Park (via Houghton, MI) typically brings cool fall weather, with average highs around 51°F and lows near 37°F. Over 50 years of records, the warmest October 17th was in 1998 (65°F average), while the coldest was 1972 (26°F) — a 39°F range across recorded history. Precipitation has occurred on 54% of recorded October 17th dates, with snow falling 6% of the time. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.

The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.

Planning for October 17th in Isle Royale? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202572°F54°F0.03"--
202470°F38°F0"--
202354°F40°F0"--
202237°F32°F0.38"--
202159°F45°F0"--
202039°F30°F0.61"--
201947°F29°F0"--
201837°F28°F0.13"--
201766°F49°F0"--
201659°F47°F1.93"--
201538°F33°F0"--
201446°F39°F1.83"--
201353°F28°F0.03"--
201258°F44°F0.18"--
201146°F41°F0.33"--
201049°F42°F0"--
200944°F26°F0.05"--
200849°F26°F0"--
200761°F49°F0.03"--
200652°F46°F0.13"--
200556°F42°F0.81"--
200435°F32°F0.03"--
200343°F24°F0"--
200241°F26°F0.03"0"
200149°F30°F0"0"
200058°F30°F0"0"
199949°F40°F0.15"0"
199874°F56°F0.86"0"
199764°F30°F0"0"
199667°F48°F1.37"0"
199570°F33°F0"0"
199462°F51°F0.46"0"
199344°F39°F0.08"0"
199237°F30°F0.1"0.4"
199171°F40°F0"0"
199046°F33°F3.61"0.3"
198938°F32°F0"0"
198848°F41°F0.23"0"
198347°F39°F0"0"
198151°F45°F1.04"0"
198064°F42°F0.33"0"
197948°F34°F0"0"
197853°F33°F0"0"
197754°F35°F0"0"
197633°F26°F0.05"0.2"
197548°F36°F0"0"
197449°F29°F0"0"
197342°F33°F0"0"
197229°F24°F0"0"
197167°F46°F0.18"0"

October 17 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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