Marine Weather Net

Yarmouth, ME Weather Forecast


Marine Forecast: Casco Bay


Yarmouth, Maine

 Lat: 43.80N, Lon: 70.19W

Current Conditions Updated: 651 PM EST WED NOV 19 2025

Clear


Temp: 30°F
  • Humidity:
  • 71%
  • Winds:
  • 3 MPH WNW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.22 in.
  • Dewpoint:
  • 22°F
  • Heat index:
  • 30°F

  • Sunrise:
  • 6:38 AM EST
  • Sunset:
  • 4:10 PM EST
  • Moonrise:
  • 6:15 AM EST
  • Moonset:
  • 3:25 PM EST

TONIGHT

MOSTLY CLEAR
Lo: 20°F

THURSDAY

PARTLY SUNNY
Hi: 45°F
Lo: 29°F

FRIDAY

PARTLY SUNNY
Hi: 49°F
Lo: 31°F

SATURDAY

PARTLY SUNNY
Hi: 45°F
Lo: 21°F
Weather Forecast In Detail:
Forecast Issued: 621 PM EST Wed Nov 19 2025

Tonight...Mostly clear. Lows around 20. Light and variable winds.
Thursday...Partly sunny. Highs in the mid 40s. Light and variable winds.
Thursday Night...Partly cloudy. Lows in the upper 20s. Light and variable winds.
Friday...Partly sunny. Highs in the upper 40s. Southwest winds around 10 mph. Gusts up to 25 mph in the afternoon.
Friday Night...Partly cloudy in the evening, then becoming mostly cloudy. A 30 percent chance of rain showers. Lows in the lower 30s. Southwest winds around 10 mph with gusts up to 20 mph in the evening, becoming light and variable.
Saturday...Partly sunny. Highs in the mid 40s.
Saturday Night...Mostly clear. Lows in the lower 20s.
Sunday...Partly sunny. Highs in the mid 40s.
Sunday Night...Partly cloudy. Lows in the upper 20s.
Monday...Partly sunny. Highs in the upper 40s.
Monday Night...Partly cloudy. Lows around 30.
Tuesday...Partly sunny. Highs in the upper 40s.
Tuesday Night...Mostly cloudy. A chance of rain showers after midnight. Lows in the lower 30s. Chance of rain 30 percent.
Wednesday...Mostly cloudy with a 40 percent chance of rain showers. Highs in the upper 40s.
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