Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 456 PM EDT TUE APR 14 2026

Mostly Cloudy
Temp: 62°F
  • Humidity:
  • 64%
  • Winds:
  • 13 MPH SE
  • Gusts:
  • 16 MPH
  • Barometer:
  • 29.85 in.
  • Dewpoint:
  • 50°F
  • Heat index:
  • 62°F

  • Sunrise:
  • 5:58 AM EDT
  • Sunset:
  • 7:22 PM EDT
  • Moonrise:
  • 4:33 AM EDT
  • Moonset:
  • 4:17 PM EDT

THIS AFTERNOON

PARTLY SUNNY
Hi: 70°F
Lo: 45°F
Precip: 50%

WEDNESDAY

CHANCE OF SHOWERS
Hi: 59°F
Lo: 45°F
Precip: 70%

THURSDAY

SHOWERS
Hi: 61°F
Lo: 45°F
Precip: 70%

FRIDAY

CHANCE OF SHOWERS
Hi: 61°F
Lo: 45°F
Precip: 60%
Weather Forecast In Detail:
Forecast Issued: 235 PM EDT Tue Apr 14 2026

This Afternoon...Partly sunny with a chance of showers with a slight chance of thunderstorms. Some thunderstorms May produce small hail. Highs around 70. Southeast winds around 10 mph with gusts up to 20 mph. Chance of rain 50 percent.
Tonight...Cloudy with showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Patchy fog after midnight. Some thunderstorms May produce small hail in the evening. Lows in the mid 40s. Southeast winds around 10 mph in the evening, becoming light and variable. Chance of rain 80 percent.
Wednesday...Mostly cloudy. Showers likely with a slight chance of thunderstorms in the afternoon. Some thunderstorms May produce small hail in the afternoon. Highs in the upper 50s. Light and variable winds. Chance of rain 70 percent.
Wednesday Night...A chance of showers in the evening, then showers likely after midnight. Lows in the mid 40s. Light and variable winds. Chance of rain 70 percent.
Thursday...Showers likely. Highs in the lower 60s. Light and variable winds. Chance of rain 70 percent.
Thursday Night...Showers likely, mainly in the evening. Lows in the mid 40s. Chance of rain 60 percent.
Friday...A chance of showers in the morning, then showers likely in the afternoon. Highs in the lower 60s. Chance of rain 60 percent.
Friday Night...Mostly cloudy with a 50 percent chance of showers. Lows in the mid 40s.
Saturday...Mostly cloudy. Highs in the mid 50s.
Saturday Night...Mostly cloudy. Lows in the lower 40s.
Sunday...A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 50s. Chance of rain 60 percent.
Sunday Night...Showers likely. Lows in the mid 30s. Chance of rain 60 percent.
Monday...A chance of showers in the morning. Partly sunny. Highs in the upper 40s. Chance of rain 40 percent.
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