Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 856 PM EST THU JAN 29 2026

Clear


Temp: 12°F
  • Humidity:
  • 55%
  • Winds:
  • 7 MPH WNW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.87 in.
  • Dewpoint:
  • -1°F
  • Heat index:
  • 12°F

  • Sunrise:
  • 7:01 AM EST
  • Sunset:
  • 4:45 PM EST
  • Moonrise:
  • 12:48 PM EST
  • Moonset:
  • 4:34 AM EST

TONIGHT

MOSTLY CLEAR
Lo: -4°F

FRIDAY

PARTLY SUNNY
Hi: 14°F
Lo: -8°F

SATURDAY

MOSTLY SUNNY
Hi: 19°F
Lo: -1°F

SUNDAY

CHANCE OF SNOW
Hi: 25°F
Lo: 10°F
Precip: 30%
Weather Forecast In Detail:
Forecast Issued: 753 PM EST Thu Jan 29 2026

COLD WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EST FRIDAY
Tonight...Mostly clear. Lows around 4 below. West winds around 10 mph with gusts up to 20 mph. Wind chill values as low as 10 below after midnight.
Friday...Partly sunny. Highs around 14. Northwest winds around 10 mph with gusts up to 25 mph. Wind chill values as low as 16 below in the morning.
Friday Night...Mostly clear. Cold with lows around 8 below. Northwest winds around 10 mph in the evening, becoming light and variable.
Saturday...Mostly sunny. Highs around 19. Light and variable winds.
Saturday Night...Mostly clear in the evening, then becoming partly cloudy. Lows around 1 below. Light and variable winds, becoming north around 10 mph after midnight. Wind chill values as low as 15 below.
Sunday...Mostly cloudy. A chance of snow in the afternoon. Highs in the mid 20s. Chance of snow 30 percent.
Sunday Night...Mostly cloudy. A chance of snow in the evening. Lows around 10 above. Chance of snow 30 percent.
Monday...Partly sunny. Highs in the lower 30s.
Monday Night...Mostly clear. Lows 5 to 10 above.
Tuesday...Partly sunny. Highs in the lower 30s.
Tuesday Night...Partly cloudy. Lows 5 to 10 above.
Wednesday...Partly sunny. Highs in the upper 20s.
Wednesday Night...Partly cloudy. Lows zero to 5 above zero.
Thursday...Partly sunny. Highs in the mid 20s.
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