Weather on December 19 at Isle Royale

Isle Royale National Park

MIMidwest800 ft elevation
Avg High27°F
Avg Low14°F
Warmest200237°F
Coldest19801°F

Based on 50 years of data from Houghton, MI

Planning Your Visit

December 19th in Isle Royale National Park (via Houghton, MI) typically brings very cold winter weather, with average highs around 27°F and lows near 14°F. Over 50 years of records, the warmest December 19th was in 2002 (37°F average), while the coldest was 1980 (1°F) — a 36°F range across recorded history. Precipitation has occurred on 50% of recorded December 19th dates, with snow falling 40% of the time (heaviest snowfall: 10"). The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.

The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.

Planning for December 19th in Isle Royale? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.

Year by Year History

YearHighLowPrecipSnow
202519°F12°F0"--
202425°F15°F0"--
202335°F11°F0"--
202220°F18°F0.13"--
202127°F11°F0.03"--
202034°F30°F0"--
201922°F9°F0"--
201839°F24°F0"--
201736°F19°F0.05"--
201626°F-8°F0"--
201522°F16°F0.08"--
201427°F4°F0"--
201325°F10°F0.05"0.5"
201231°F16°F0"--
201138°F24°F0"--
201022°F6°F0"--
200925°F15°F0"--
200815°F3°F0.03"--
200726°F24°F0"--
200640°F24°F0"--
200526°F13°F0"--
20046°F-3°F0"--
200324°F10°F0"--
200243°F32°F0.03"0.2"
200136°F27°F0.18"0.4"
200018°F13°F0.46"3.5"
199931°F15°F0"0"
199832°F16°F1.65"5.4"
199742°F29°F0"0"
199624°F19°F0.69"7.7"
199531°F20°F0.15"2.3"
199436°F18°F0"0"
199336°F32°F0.33"0.8"
199228°F13°F0.13"2"
199120°F-5°F0"0"
199022°F13°F0.03"0.4"
19895°F-3°F1.24"10"
198829°F18°F0"0"
198728°F24°F0"0"
198114°F9°F0.1"1.5"
19807°F-5°F0.41"3.7"
197930°F22°F0"0"
197821°F14°F0.38"2"
197734°F30°F0.36"1.4"
197632°F16°F0.05"0.4"
197517°F4°F0.08"0.5"
197427°F12°F0.05"0.2"
197322°F4°F0.2"4.2"
197228°F14°F0.1"0.4"
197124°F7°F0"0"

December 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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