Weather on August 19 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High74°F
Avg Low55°F
Warmest197684°F
Coldest197752°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

August 19th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 74°F and lows near 55°F. Over 50 years of records, the warmest August 19th was in 1976 (84°F average), while the coldest was 1977 (52°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 38% of August 19th dates historically, with the wettest August 19th recording 4.34" of rain. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.

The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.

Planning for August 19th in Isle Royale? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202572°F61°F0"--
202470°F46°F0"--
202386°F55°F0"--
202280°F59°F0"--
202189°F63°F0"--
202073°F58°F2.46"--
201978°F57°F0"--
201881°F55°F0"--
201774°F61°F0"--
201671°F61°F0.18"--
201577°F57°F1.19"--
201465°F53°F2.95"--
201379°F61°F0"--
201266°F46°F0"--
201178°F58°F2.36"--
201070°F51°F0.03"--
200971°F45°F0.03"--
200866°F46°F0"--
200765°F49°F0"--
200671°F55°F1.09"--
200574°F60°F0"--
200465°F44°F0.05"--
200389°F68°F0"0"
200268°F53°F0"0"
200176°F53°F0"0"
200069°F42°F0"0"
199973°F50°F0"0"
199880°F50°F0"0"
199769°F48°F0"0"
199683°F58°F0.08"0"
199583°F68°F0.03"0"
199477°F56°F0.18"0"
199381°F62°F0.03"0"
199271°F51°F0"0"
199166°F48°F0"0"
199058°F51°F0"0"
198983°F56°F0"0"
198870°F46°F0"0"
198379°F67°F4.34"0"
198174°F54°F0"0"
198072°F60°F1.42"0"
197975°F56°F0"0"
197864°F53°F0.08"0"
197760°F45°F0.33"0"
197697°F71°F0"0"
197569°F50°F0"0"
197480°F54°F0"0"
197376°F65°F3.35"0"
197280°F60°F0"0"
197173°F57°F0.91"0"

August 19 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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