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Weather in Winter Harbor, ME · National Weather Service + NOAA

Winter Harbor stays cool in summer

Winter Harbor has cold winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 77°, a January night drops to 15°. A typical November afternoon reaches 46°, and nights fall to 32°.

Winter 34°/17°Spring 51°/34°Summer 74°/56°Fall 57°/41°
Right now
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Sunrise 6:11 am · sunset 4:20 pm

Getting the latest forecast from the National Weather Service…

What stands out about Winter Harbor’s weather

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

Climate →
Cool summersJuly afternoons average 77°, cooler than 97% of U.S. towns.Milder winters than most of MaineJanuary nights average 15°, milder than 551 of 614 Maine towns.A long growing season177 frost-free days, from Apr 27 to Oct 22.Wetter than most of Maine51 inches of rain and melted snow a year, more than 589 of 614 Maine towns.
A normal year

Where today sits in Winter Harbor’s year

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

Full climate →
Winter
34° / 17°
Snow is rare
Spring
51° / 34°
Last frost around Apr 27
Summer
74° / 56°
3 days reach 90° in a normal year
Fall now
57° / 41°
First frost around Oct 22
Pastthe usual first frost (Oct 22). Last frost next spring: Apr 27
Best months to be outside
JunJulAugSep
Highs of 62–84° and lows of 40° or more
When is it wettest?October, with 5.6 inches.Is it warmer than it used to be?+1.7° 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 Winter Harbor.

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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 Winter Harbor itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Acadia Np, ME (6 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.