Weather on July 20 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High76°F
Avg Low56°F
Warmest201178°F
Coldest199251°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

July 20th 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 20th was in 2011 (78°F average), while the coldest was 1992 (51°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 34% of July 20th dates historically, with the wettest July 20th recording 2.16" of rain. The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.

The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.

Planning for July 20th in Isle Royale? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202576°F52°F0"--
202475°F53°F1.02"--
202369°F57°F0.51"--
202274°F63°F0.41"--
202168°F46°F0"--
202068°F50°F0"--
201976°F59°F0"--
201873°F63°F0.41"--
201778°F55°F0"--
201687°F61°F0"--
201572°F68°F0"--
201483°F65°F0"--
201364°F46°F0"--
201283°F52°F0"--
201191°F64°F1.37"--
201073°F56°F0.25"--
200975°F48°F0"--
200869°F54°F0.05"--
200771°F47°F0"--
200675°F58°F0"--
200585°F56°F0"--
200466°F56°F0"--
200379°F60°F0"0"
200288°F59°F0"0"
200185°F65°F0"0"
200073°F57°F0.3"0"
199982°F55°F0"0"
199884°F64°F0"0"
199773°F54°F0"0"
199672°F46°F0"0"
199576°F54°F1.09"0"
199484°F64°F0.61"0"
199366°F55°F0"0"
199257°F45°F0"0"
199176°F63°F0.41"0"
199073°F57°F0"0"
198980°F55°F0"0"
198879°F57°F0.2"0"
198382°F62°F0"0"
198168°F49°F0.13"0"
198075°F62°F0.56"0"
197981°F58°F0"0"
197871°F54°F0"0"
197783°F60°F2.16"0"
197676°F60°F0.3"0"
197570°F53°F0"0"
197476°F48°F0"0"
197372°F55°F0"0"
197280°F61°F0.58"0"
197174°F54°F0"0"

July 20 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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