Weather on June 18 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High73°F
Avg Low51°F
Warmest199582°F
Coldest199251°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

June 18th in Isle Royale National Park (via Houghton, MI) typically brings pleasant summer weather, with average highs around 73°F and lows near 51°F. Over 50 years of records, the warmest June 18th was in 1995 (82°F average), while the coldest was 1992 (51°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 36% of June 18th dates historically, with the wettest June 18th recording 2.11" of rain. The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.

The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.

Planning for June 18th in Isle Royale? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202579°F57°F0"--
202491°F53°F0.84"--
202379°F51°F0"--
202268°F46°F0"--
202179°F54°F0"--
202088°F63°F0"--
201966°F46°F0"--
201876°F54°F0.03"--
201759°F52°F2.11"--
201683°F58°F0"--
201564°F41°F0"--
201468°F50°F0"--
201369°F36°F0"--
201282°F59°F0.71"--
201159°F53°F0"--
201086°F61°F0"--
200975°F51°F0.03"--
200866°F45°F0"--
200787°F53°F1.17"--
200679°F64°F0.08"--
200569°F46°F0"--
200462°F44°F0"--
200374°F54°F0"0"
200272°F45°F0"0"
200170°F52°F0.1"0"
200070°F46°F0.43"0"
199976°F51°F0"0"
199877°F58°F0.08"0"
199767°F49°F1.19"0"
199669°F50°F0"0"
199595°F68°F0"0"
199474°F57°F0.56"0"
199364°F49°F0"0"
199261°F42°F0.71"0"
199185°F60°F0"0"
199062°F48°F0.13"0"
198978°F55°F0.2"0"
198882°F51°F0"0"
198366°F47°F0"0"
198169°F50°F0"0"
198059°F47°F0"0"
197973°F47°F0"0"
197869°F51°F0"0"
197760°F51°F0.28"0"
197662°F49°F0.69"0"
197570°F46°F0"0"
197470°F47°F0"0"
197368°F51°F0"0"
197276°F40°F0"0"
197176°F61°F1.93"0"

June 18 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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