Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 1143 PM EDT MON JUN 22 2026

Rain
Temp: 60°F
  • Humidity:
  • 100%
  • Winds:
  • 3 MPH SE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.05 in.
  • Dewpoint:
  • 60°F
  • Heat index:
  • 60°F

  • Sunrise:
  • 4:58 AM EDT
  • Sunset:
  • 8:26 PM EDT
  • Moonrise:
  • 2:48 PM EDT
  • Moonset:
  • 12:53 AM EDT

TONIGHT

THUNDER STORMS
Lo: 55°F
Precip: 100%

TUESDAY

SHOWERS
Hi: 75°F
Lo: 59°F
Precip: 70%

WEDNESDAY

MOSTLY SUNNY
Hi: 79°F
Lo: 59°F

THURSDAY

PARTLY SUNNY
Hi: 81°F
Lo: 55°F
Weather Forecast In Detail:
Forecast Issued: 729 PM EDT Mon Jun 22 2026

Tonight...Showers with isolated thunderstorms. Lows in the mid 50s. Light and variable winds. Chance of rain near 100 percent.
Tuesday...Cloudy. Showers likely, mainly in the morning. Highs in the mid 70s. Light and variable winds. Chance of rain 70 percent.
Tuesday Night...Patchy fog in the evening. Partly cloudy. Lows in the upper 50s. Light and variable winds.
Wednesday...Mostly sunny. Highs in the upper 70s. Northwest winds around 10 mph.
Wednesday Night...Mostly clear. Lows in the upper 50s. Northwest winds around 10 mph in the evening, becoming light and variable.
Thursday...Partly sunny. Highs in the lower 80s.
Thursday Night...Partly cloudy in the evening. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 50s. Chance of rain 70 percent.
Friday...Showers likely. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent.
Friday Night...Showers likely with a chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 50s. Chance of rain 70 percent.
Saturday...Partly sunny. Highs in the lower 80s.
Saturday Night...Partly cloudy. Lows in the upper 50s.
Sunday...Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.
Sunday Night...Partly cloudy. Lows in the upper 50s.
Monday...Partly sunny. Highs in the lower 80s.
SHARE THIS PAGE: