Weather on September 28 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High61°F
Avg Low43°F
Warmest198366°F
Coldest200340°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

September 28th in Isle Royale National Park (via Houghton, MI) typically brings mild fall weather, with average highs around 61°F and lows near 43°F. Over 50 years of records, the warmest September 28th was in 1983 (66°F average), while the coldest was 2003 (40°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 44% of September 28th dates historically, with the wettest September 28th recording 3.53" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.

The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.

Planning for September 28th in Isle Royale? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202578°F51°F0"--
202480°F51°F0"--
202368°F52°F0"--
202252°F32°F0"--
202171°F39°F0"--
202055°F50°F0.15"--
201956°F34°F0"--
201849°F40°F0.1"--
201761°F44°F0.99"--
201660°F42°F0.05"--
201569°F55°F0.28"--
201480°F47°F0"--
201375°F53°F0.41"--
201263°F34°F0"--
201166°F54°F0"--
201054°F38°F0"--
200955°F42°F3.53"--
200856°F35°F0"--
200759°F47°F0"--
200650°F37°F0.76"--
200564°F45°F0.79"--
200455°F37°F0"--
200345°F35°F1.12"--
200255°F39°F0.41"0"
200157°F37°F0"0"
200067°F26°F0"0"
199961°F43°F0"0"
199873°F42°F0"0"
199771°F57°F0.89"0"
199658°F45°F0.13"0"
199570°F48°F0"0"
199459°F45°F0.71"0"
199345°F37°F0.64"0"
199248°F37°F0.08"0"
199153°F31°F0"0"
199056°F42°F0"0"
198972°F54°F0"0"
198850°F42°F0"0"
198377°F55°F0"0"
198144°F38°F0"0"
198057°F33°F0"0"
197966°F45°F0.69"0"
197860°F43°F0.23"0"
197756°F47°F0.91"0"
197656°F34°F0"0"
197568°F47°F0"0"
197449°F39°F0.41"0"
197366°F48°F0"0"
197258°F42°F0.89"0"
197174°F54°F0.43"0"

September 28 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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