Weather on July 27 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High76°F
Avg Low56°F
Warmest202477°F
Coldest201351°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

July 27th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 76°F and lows near 56°F. Over 50 years of records, the warmest July 27th was in 2024 (77°F average), while the coldest was 2013 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 30% of July 27th dates historically, with the wettest July 27th recording 1.8" of rain. The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.

The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.

Planning for July 27th in Isle Royale? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202585°F68°F0"--
202489°F64°F0"--
202387°F61°F0.74"--
202277°F57°F0.15"--
202180°F55°F0.03"--
202077°F62°F0"--
201978°F62°F0"--
201864°F54°F0"--
201776°F56°F0"--
201669°F60°F0"--
201591°F61°F0"--
201467°F49°F1.09"--
201357°F45°F0.25"--
201271°F48°F0"--
201173°F56°F0.25"--
201082°F62°F1.35"--
200977°F56°F0"--
200875°F53°F0"--
200784°F62°F0"--
200682°F60°F0"--
200570°F42°F0.05"--
200481°F52°F0"--
200371°F54°F0"--
200283°F60°F0.08"0"
200173°F47°F0"0"
200075°F62°F0.13"0"
199980°F57°F0"0"
199876°F63°F1.42"0"
199781°F61°F0"0"
199672°F48°F0"0"
199581°F60°F0"0"
199472°F54°F0"0"
199375°F60°F0"0"
199262°F49°F0"0"
199172°F51°F0"0"
199075°F65°F0.18"0"
198973°F58°F1.78"0"
198886°F59°F0"0"
198391°F61°F0"0"
198169°F50°F0"0"
198077°F47°F0"0"
197970°F54°F0"0"
197865°F50°F0"0"
197776°F60°F0"0"
197676°F56°F0"0"
197577°F59°F0"0"
197479°F59°F0"0"
197362°F50°F1.8"0"
197273°F45°F0"0"
197170°F48°F0.89"0"

July 27 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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