Weather on May 16 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High62°F
Avg Low40°F
Warmest199873°F
Coldest201438°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

May 16th in Isle Royale National Park (via Houghton, MI) typically brings mild spring weather, with average highs around 62°F and lows near 40°F. Over 50 years of records, the warmest May 16th was in 1998 (73°F average), while the coldest was 2014 (38°F) — a 35°F range across recorded history. Precipitation has occurred on 38% of recorded May 16th dates, with snow falling 4% of the time. The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.

The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.

Planning for May 16th in Isle Royale? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202579°F49°F0.41"--
202451°F45°F0.51"--
202363°F34°F0"--
202256°F43°F0"--
202166°F39°F0"--
202058°F35°F0"--
201959°F39°F0.53"--
201878°F41°F0"--
201766°F46°F0.15"--
201648°F34°F0.23"--
201563°F43°F0"--
201445°F32°F0"--
201358°F39°F0"--
201257°F37°F0"--
201157°F32°F0"--
201072°F38°F0"--
200955°F33°F0.15"--
200859°F40°F0.33"--
200752°F32°F0"--
200667°F48°F0"--
200548°F32°F0"--
200463°F37°F0.1"--
200365°F46°F0"0"
200272°F33°F0"0"
200176°F50°F0.2"0"
200064°F41°F0"0"
199968°F53°F0.05"0"
199888°F58°F0.13"0"
199746°F32°F0.25"0.8"
199665°F49°F0"0"
199571°F39°F0.69"0"
199453°F31°F0"0"
199348°F33°F0"0"
199269°F45°F0.79"0"
199171°F43°F0.03"0"
199049°F39°F1.93"0"
198979°F49°F0"0"
198848°F33°F0"0"
198252°F47°F0.05"0"
198150°F34°F0"0"
198066°F41°F0"0"
197964°F32°F0"0"
197871°F45°F0"0"
197787°F57°F0"0"
197658°F45°F0.76"0"
197569°F36°F0"0"
197466°F40°F0"0"
197344°F34°F0.1"0.1"
197273°F43°F0"0"
197166°F40°F0"0"

May 16 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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