Marine Weather Net

Yarmouth, ME Weather Forecast


Marine Forecast: Casco Bay


Yarmouth, Maine

 Lat: 43.80N, Lon: 70.19W

Current Conditions Updated: 451 AM EDT TUE SEP 22 2026

Overcast
Temp: 52°F
  • Humidity:
  • 63%
  • Winds:
  • 10 MPH NNE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.33 in.
  • Dewpoint:
  • 40°F
  • Heat index:
  • 52°F

  • Sunrise:
  • 6:25 AM EDT
  • Sunset:
  • 6:38 PM EDT
  • Moonrise:
  • 4:55 PM EDT
  • Moonset:
  • 1:48 AM EDT

TONIGHT

MOSTLY CLOUDY
Lo: 45°F

TUESDAY

PARTLY SUNNY
Hi: 65°F
Lo: 41°F

WEDNESDAY

SUNNY

Hi: 65°F
Lo: 41°F

THURSDAY

MOSTLY SUNNY
Hi: 65°F
Lo: 45°F
Weather Forecast In Detail:
Forecast Issued: 231 AM EDT Tue Sep 22 2026

Rest Of Tonight...Mostly cloudy. Lows in the mid 40s. Northeast winds around 10 mph.
Tuesday...Partly sunny. Highs in the mid 60s. Northeast winds around 10 mph.
Tuesday Night...Partly cloudy in the evening, then clearing. Lows in the lower 40s. Light and variable winds, becoming north around 10 mph after midnight.
Wednesday...Sunny. Highs in the mid 60s. Northeast winds around 10 mph, becoming east in the afternoon.
Wednesday Night...Mostly clear. Lows in the lower 40s. Light and variable winds, becoming north around 10 mph after midnight.
Thursday...Mostly sunny. Highs in the mid 60s.
Thursday Night...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 40s.
Friday...Mostly cloudy. A chance of showers in the afternoon. Highs in the mid 60s. Chance of rain 40 percent.
Friday Night...Mostly cloudy with a 50 percent chance of showers. Lows in the upper 40s.
Saturday...Mostly cloudy with a 50 percent chance of showers. Highs in the mid 60s.
Saturday Night...Showers likely. Lows in the upper 40s. Chance of rain 60 percent.
Sunday...Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of showers. Highs in the mid 60s.
Sunday Night...Partly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 40 percent.
Monday...Partly sunny. Highs in the upper 60s.
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