Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 656 PM EST THU JAN 8 2026

Clear


Temp: 31°F
  • Humidity:
  • 85%
  • Winds:
  • N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.23 in.
  • Dewpoint:
  • 27°F
  • Heat index:
  • 31°F

  • Sunrise:
  • 7:14 AM EST
  • Sunset:
  • 4:19 PM EST
  • Moonrise:
  • 10:41 PM EST
  • Moonset:
  • 10:11 AM EST

TONIGHT

PARTLY CLOUDY
Lo: 18°F

FRIDAY

CHANCE OF RAIN
Hi: 40°F
Lo: 31°F
Precip: 50%

SATURDAY

PARTLY SUNNY
Hi: 41°F
Lo: 27°F
Precip: 30%

SUNDAY

SNOW
Hi: 35°F
Lo: 21°F
Precip: 70%
Weather Forecast In Detail:
Forecast Issued: 500 PM EST Thu Jan 08 2026

Tonight...Partly cloudy. Patchy freezing fog. Lows around 18. Light and variable winds.
Friday...Mostly cloudy. Patchy freezing fog in the morning. A chance of rain in the afternoon. Highs around 40. Light and variable winds, becoming south around 10 mph with gusts up to 25 mph in the afternoon. Chance of precipitation 50 percent.
Friday Night...Cloudy with rain in the evening, then partly cloudy with a slight chance of rain after midnight. Lows in the lower 30s. South winds 10 to 15 mph, becoming west after midnight. Chance of rain 80 percent.
Saturday...Partly sunny in the morning, then cloudy with a chance of rain and snow in the afternoon. Highs in the lower 40s. West winds around 10 mph in the morning, becoming light and variable. Chance of precipitation 30 percent.
Saturday Night...Snow likely with a chance of rain in the evening, then snow after midnight. Light snow accumulation. Lows in the upper 20s. Light and variable winds. Chance of precipitation 80 percent.
Sunday...A chance of rain. Snow likely, mainly in the morning. Highs in the mid 30s. Chance of precipitation 70 percent.
Sunday Night...Mostly cloudy with a chance of snow in the evening, then partly cloudy after midnight. Lows in the lower 20s. Chance of snow 50 percent.
Monday...Partly sunny. Highs in the lower 30s.
Monday Night...Partly cloudy. Lows around 20.
Tuesday...Partly sunny. Highs in the upper 30s.
Tuesday Night...Mostly cloudy. Lows in the mid 20s.
Wednesday...Cloudy. Highs in the upper 30s.
Wednesday Night...Cloudy. A chance of snow after midnight. Lows in the lower 20s. Chance of snow 30 percent.
Thursday...A chance of snow in the morning. Partly sunny. Highs in the lower 30s. Chance of snow 30 percent.
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