Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 1056 AM EST MON NOV 3 2025

Mostly Cloudy
Temp: 47°F
  • Humidity:
  • 68%
  • Winds:
  • 7 MPH S
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.11 in.
  • Dewpoint:
  • 37°F
  • Heat index:
  • 47°F

  • Sunrise:
  • 6:18 AM EST
  • Sunset:
  • 4:28 PM EST
  • Moonrise:
  • 3:13 PM EST
  • Moonset:
  • 3:48 AM EST

TODAY

PARTLY SUNNY
Hi: 59°F
Lo: 37°F
Precip: 50%

TUESDAY

MOSTLY SUNNY
Hi: 51°F
Lo: 31°F

WEDNESDAY

CHANCE OF SHOWERS
Hi: 51°F
Lo: 35°F
Precip: 40%

THURSDAY

PARTLY SUNNY
Hi: 49°F
Lo: 25°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 608 AM EST Mon Nov 03 2025

Today...Partly sunny this morning, then mostly cloudy with a chance of rain showers this afternoon. Highs in the upper 50s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.
Tonight...Cloudy with showers in the evening, then partly cloudy after midnight. Lows in the upper 30s. Southwest winds 10 to 15 mph, becoming west after midnight. Gusts up to 30 mph. Chance of rain 90 percent.
Tuesday...Mostly sunny. Highs in the lower 50s. Northwest winds 15 to 25 mph with gusts up to 35 mph.
Tuesday Night...Mostly clear. Lows in the lower 30s. West winds 10 to 15 mph. Gusts up to 30 mph in the evening.
Wednesday...Mostly cloudy. A chance of rain showers in the afternoon. Highs in the lower 50s. Southwest winds around 10 mph. Chance of rain 40 percent.
Wednesday Night...Rain showers likely. Lows in the mid 30s. Chance of rain 70 percent.
Thursday...Partly sunny. A chance of rain showers in the morning. Highs in the upper 40s. Chance of rain 50 percent.
Thursday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 20s.
Friday...Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 50s.
Friday Night...A chance of showers in the evening, then showers likely after midnight. Lows in the upper 30s. Chance of rain 70 percent.
Saturday...Showers likely, mainly in the morning. Highs in the lower 50s. Chance of rain 60 percent.
Saturday Night...Partly cloudy. Lows in the upper 20s.
Sunday...Partly sunny in the morning, then mostly cloudy with a chance of rain showers in the afternoon. Highs in the upper 40s. Chance of rain 40 percent.
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