Weather on April 15 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High47°F
Avg Low31°F
Warmest201062°F
Coldest201416°F

Based on 49 years of data from Houghton, MI

Planning Your Visit

April 15th in Isle Royale National Park (via Houghton, MI) typically brings chilly spring weather, with average highs around 47°F and lows near 31°F. Over 49 years of records, the warmest April 15th was in 2010 (62°F average), while the coldest was 2014 (16°F) — a 46°F range across recorded history. Precipitation has occurred on 33% of recorded April 15th dates, with snow falling 6% of the time (heaviest snowfall: 1.7"). The last decade has been 5.0°F cooler on this date compared to 20-30 years ago.

The last decade has been 5.0°F cooler on this date compared to 20-30 years ago.

Planning for April 15th in Isle Royale? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202534°F28°F0.18"--
202367°F38°F0.84"--
202231°F23°F0.18"--
202140°F31°F0"--
202029°F11°F0.03"--
201948°F23°F0"--
201826°F22°F0.18"--
201759°F49°F0"--
201661°F43°F0"--
201561°F34°F0"--
201423°F8°F0"--
201345°F31°F0.56"--
201251°F40°F0.36"--
201136°F26°F0"--
201073°F50°F0.15"--
200956°F28°F0"--
200856°F34°F0"--
200746°F25°F0"--
200654°F33°F0"--
200563°F30°F0"--
200448°F28°F0"--
200350°F32°F0"--
200255°F43°F0"--
200148°F33°F1.52"0"
200033°F28°F0.25"0.4"
199967°F40°F0"0"
199850°F30°F0"0"
199758°F32°F0"0"
199642°F28°F0.58"1.7"
199543°F22°F0"0"
199458°F35°F0.69"0"
199341°F31°F0"0"
199235°F32°F0"0"
199138°F34°F0"0"
199038°F31°F0"0"
198947°F29°F0"0"
198837°F25°F0.18"1.1"
198247°F39°F0.86"0"
198157°F22°F0"0"
198034°F26°F0"0"
197939°F33°F0"0"
197840°F29°F0"0"
197754°F36°F0.15"0"
197664°F43°F0"0"
197549°F29°F0"0"
197442°F30°F0"0"
197355°F46°F1.19"0"
197254°F28°F0"0"
197143°F25°F0"0"

April 15 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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