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Weather in Isle au Haut, ME · National Weather Service + NOAA

Isle au Haut has milder winters than most of Maine

Isle au Haut has chilly winters and cool summers, with plenty of rain. A typical July afternoon reaches 75°, a January night drops to 15°. Normal November highs come to 46°, and lows to 32°.

Winter 34°/18°Spring 50°/34°Summer 73°/56°Fall 57°/42°
Right now
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Sunrise 6:20 am · sunset 4:15 pm

Getting the latest forecast from the National Weather Service…

What stands out about Isle au Haut’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Milder winters than most of MaineJanuary nights average 15°, milder than 579 of 614 Maine towns.Cool summersJuly afternoons average 75°, cooler than 98% of U.S. towns.Wetter than most of Maine51 inches of rain and melted snow a year, more than 596 of 614 Maine towns.
A normal year

Where today sits in Isle au Haut’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
34° / 18°
Snow is rare
Spring
50° / 34°
Frost is rare by spring
Summer
73° / 56°
90° days are rare
Fall now
57° / 42°
Mild well into the fall
Best months to be outside
JunJulAugSep
Highs of 62–84° and lows of 40° or more
When is it wettest?October, with 5.5 inches.Is it warmer than it used to be?+1.6° vs. the 20th century.What is each month like?Highs, lows, rain and snow for all 12.

Weather talk

Road reports, first frosts and storm memories from neighbors in Isle au Haut.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Isle au Haut itself (about a 3-mile square). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.