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 TUE JUN 2 2026

Clear


Temp: 72°F
  • Humidity:
  • 27%
  • Winds:
  • N/A MPH N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • N/A
  • Dewpoint:
  • 37°F
  • Heat index:
  • N/A

  • Sunrise:
  • 5:00 AM EDT
  • Sunset:
  • 8:16 PM EDT
  • Moonrise:
  • 10:48 PM EDT
  • Moonset:
  • 6:16 AM EDT

TODAY

PARTLY SUNNY
Hi: 75°F
Lo: 49°F

WEDNESDAY

MOSTLY SUNNY
Hi: 79°F
Lo: 51°F

THURSDAY

MOSTLY SUNNY
Hi: 85°F
Lo: 59°F

FRIDAY

PARTLY SUNNY
Hi: 85°F
Lo: 59°F
Weather Forecast In Detail:
Forecast Issued: 801 AM EDT Tue Jun 02 2026

Today...Partly sunny. Highs in the mid 70s. Northwest winds around 10 mph.
Tonight...Partly cloudy in the evening, then clearing. Lows in the upper 40s. Northwest winds around 10 mph in the evening, becoming light and variable.
Wednesday...Mostly sunny. Highs in the upper 70s. Light and variable winds, becoming west around 10 mph in the afternoon.
Wednesday Night...Mostly clear. Lows in the lower 50s. Southwest winds around 10 mph in the evening, becoming light and variable.
Thursday...Mostly sunny. Warm with highs in the mid 80s. Light and variable winds, becoming southwest around 10 mph in the afternoon.
Thursday Night...Partly cloudy. Lows in the upper 50s.
Friday...Partly sunny. Warm with highs in the mid 80s.
Friday Night...Partly cloudy. Lows in the upper 50s.
Saturday...Partly sunny in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs around 80. Chance of rain 50 percent.
Saturday Night...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Lows in the lower 50s. Chance of rain 50 percent.
Sunday...Partly sunny. A chance of showers in the morning. Highs in the lower 70s. Chance of rain 30 percent.
Sunday Night...Partly cloudy with a 30 percent chance of showers. Lows around 50.
Monday...Partly sunny. Highs in the lower 70s.
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