Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 1256 AM EDT THU APR 2 2026

Clear


Temp: 35°F
  • Humidity:
  • 78%
  • Winds:
  • 7 MPH NE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.44 in.
  • Dewpoint:
  • 29°F
  • Heat index:
  • 35°F

  • Sunrise:
  • 6:19 AM EDT
  • Sunset:
  • 7:08 PM EDT
  • Moonrise:
  • 8:09 PM EDT
  • Moonset:
  • 6:17 AM EDT

TONIGHT

PARTLY CLOUDY
Lo: 31°F
Precip: 20%

THURSDAY

MOSTLY CLOUDY
Hi: 41°F
Lo: 31°F

FRIDAY

CHANCE OF RAIN
Hi: 59°F
Lo: 41°F
Precip: 50%

SATURDAY

PARTLY SUNNY
Hi: 55°F
Lo: 35°F
Weather Forecast In Detail:
Forecast Issued: 744 PM EDT Wed Apr 01 2026

Tonight...Partly cloudy with a slight chance of rain this evening, then cloudy after midnight. Lows in the lower 30s. North winds around 10 mph. Chance of rain 20 percent.
Thursday...Mostly cloudy. Highs in the lower 40s. Northeast winds around 10 mph, becoming east in the afternoon.
Thursday Night...A slight chance of snow in the evening. Cloudy with a chance of rain. Patchy fog after midnight. Lows in the lower 30s. Southeast winds around 10 mph in the evening, becoming light and variable. Chance of precipitation 50 percent.
Friday...Patchy fog in the morning. Cloudy with a 50 percent chance of rain. Highs in the upper 50s. South winds around 10 mph.
Friday Night...Partly cloudy. Lows in the lower 40s. Southwest winds around 10 mph, becoming west after midnight.
Saturday...Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 50s.
Saturday Night...A chance of rain showers in the evening, then rain showers likely after midnight. Lows in the mid 30s. Chance of rain 70 percent.
Sunday...Rain showers. Highs in the mid 50s. Chance of rain 90 percent.
Sunday Night...Rain showers likely in the evening, then partly cloudy with a chance of rain showers after midnight. Lows in the mid 30s. Chance of rain 70 percent.
Monday...Partly sunny. Highs in the upper 40s.
Monday Night...Partly cloudy. Lows in the upper 20s.
Tuesday...Partly sunny. Highs in the mid 40s.
Tuesday Night...Partly cloudy in the evening, then clearing. Lows in the lower 20s.
Wednesday...Mostly sunny. Highs in the lower 40s.
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