Marine Weather Net

Harpswell, ME Weather Forecast


Marine Forecast: Casco Bay


Harpswell, Maine

 Lat: 43.85N, Lon: 70.36W

Current Conditions Updated: 956 AM EDT WED MAY 13 2026

Overcast
Temp: 47°F
  • Humidity:
  • 65%
  • Winds:
  • N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.08 in.
  • Dewpoint:
  • 36°F
  • Heat index:
  • 47°F

  • Sunrise:
  • 5:16 AM EDT
  • Sunset:
  • 7:56 PM EDT
  • Moonrise:
  • 3:15 AM EDT
  • Moonset:
  • 4:22 PM EDT

REST OF TODAY

CHANCE OF SHOWERS
Hi: 55°F
Lo: 45°F
Precip: 50%

THURSDAY

CHANCE OF T-STORM
Hi: 59°F
Lo: 45°F
Precip: 100%

FRIDAY

RAIN
Hi: 59°F
Lo: 41°F
Precip: 80%

SATURDAY

MOSTLY SUNNY
Hi: 75°F
Lo: 51°F
Weather Forecast In Detail:
Forecast Issued: 815 AM EDT Wed May 13 2026

Rest Of Today...Cloudy. A slight chance of showers early this morning, then a chance of showers this afternoon. Highs in the mid 50s. Southeast winds around 10 mph. Chance of rain 50 percent.
Tonight...Cloudy. A chance of showers, mainly in the evening. Patchy fog after midnight. Lows in the mid 40s. Southeast winds around 10 mph in the evening, becoming light and variable. Chance of rain 40 percent.
Thursday...Patchy fog in the morning. A chance of rain in the morning, then rain with a slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Southeast winds around 10 mph with gusts up to 20 mph. Chance of rain near 100 percent.
Thursday Night...Rain. Patchy fog after midnight. Lows in the mid 40s. Northeast winds around 10 mph. Chance of rain 90 percent.
Friday...Patchy fog in the morning. Rain. Highs in the upper 50s. Northeast winds around 10 mph in the morning, becoming light and variable. Chance of rain 80 percent.
Friday Night...Partly cloudy. A chance of rain in the evening. Lows in the lower 40s. Chance of rain 30 percent.
Saturday...Mostly sunny. Highs in the mid 70s.
Saturday Night...Mostly clear. Lows in the lower 50s.
Sunday...Mostly sunny. Highs in the mid 70s.
Sunday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s.
Monday...Partly sunny. Highs in the lower 70s.
Monday Night...Partly cloudy. Lows in the upper 40s.
Tuesday...Partly sunny. Highs in the upper 70s.
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