Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 1256 PM EDT WED APR 22 2026

Overcast
Temp: 44°F
  • Humidity:
  • 76%
  • Winds:
  • 8 MPH S
  • Gusts:
  • 16 MPH
  • Barometer:
  • 30.12 in.
  • Dewpoint:
  • 37°F
  • Heat index:
  • 44°F

  • Sunrise:
  • 5:45 AM EDT
  • Sunset:
  • 7:32 PM EDT
  • Moonrise:
  • 9:38 AM EDT
  • Moonset:
  • 1:13 AM EDT

THIS AFTERNOON

ISOLATED SHOWERS
Hi: 45°F
Precip: 30%

WEDNESDAY

RAIN SHOWERS
Hi: 45°F
Lo: 35°F
Precip: 50%

THURSDAY

PARTLY SUNNY
Hi: 55°F
Lo: 31°F
Precip: 40%

FRIDAY

PARTLY SUNNY
Hi: 51°F
Lo: 30°F
Weather Forecast In Detail:
Forecast Issued: 1125 AM EDT Wed Apr 22 2026

This Afternoon...Cloudy. Isolated showers early, then scattered showers. Highs in the mid 40s. South winds around 10 mph. Chance of rain 30 percent.
Wednesday...Cloudy. A chance of rain showers in the afternoon. Highs in the mid 40s. South winds around 10 mph. Chance of rain 50 percent.
Wednesday Night...Cloudy with a 50 percent chance of showers. Lows in the mid 30s. South winds around 10 mph in the evening, becoming light and variable.
Thursday...Partly sunny with a 40 percent chance of showers. Highs in the mid 50s. Northwest winds around 10 mph. Gusts up to 25 mph in the afternoon.
Thursday Night...Mostly clear. Lows in the lower 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable.
Friday...Partly sunny. Highs in the lower 50s.
Friday Night...Partly cloudy in the evening, then clearing. Lows around 30.
Saturday...Partly sunny. Highs in the mid 50s.
Saturday Night...Partly cloudy. Lows in the mid 30s.
Sunday...Partly sunny. Highs in the upper 50s.
Sunday Night...Partly cloudy. Lows in the mid 30s.
Monday...Partly sunny. Highs in the mid 50s.
Monday Night...Partly cloudy. Lows in the mid 30s.
Tuesday...Partly sunny. Highs in the mid 50s.
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