Marine Weather Net

Portland, ME Weather Forecast


Marine Forecast: Casco Bay


Portland, Maine

 Lat: 43.66N, Lon: 70.26W

Current Conditions Updated: 1251 PM EDT WED MAR 26 2025

Mostly Cloudy
Temp: 47°F
  • Humidity:
  • 43%
  • Winds:
  • 5 MPH VRB
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.97 in.
  • Dewpoint:
  • 26°F
  • Heat index:
  • 47°F

  • Sunrise:
  • 6:31 AM EDT
  • Sunset:
  • 6:59 PM EDT
  • Moonrise:
  • 5:20 AM EDT
  • Moonset:
  • 3:41 PM EDT

TODAY

PARTLY SUNNY
Hi: 45°F
Lo: 27°F

THURSDAY

MOSTLY SUNNY
Hi: 45°F
Lo: 29°F

FRIDAY

PARTLY SUNNY
Hi: 49°F
Lo: 27°F

SATURDAY

SNOW AND RAIN
Hi: 39°F
Lo: 29°F
Precip: 70%
Weather Forecast In Detail:
Forecast Issued: 1020 AM EDT Wed Mar 26 2025

Today...Partly sunny. Highs in the mid 40s. Light and variable winds.
Tonight...Mostly cloudy with scattered rain showers with isolated snow showers in the evening, then partly cloudy after midnight. Lows in the upper 20s. Light and variable winds. Chance of precipitation 40 percent.
Thursday...Mostly sunny. Highs in the mid 40s. Northwest winds around 10 mph.
Thursday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 20s. Light and variable winds.
Friday...Partly sunny. Highs in the upper 40s. West winds around 10 mph with gusts up to 20 mph.
Friday Night...Snow likely after midnight. Lows in the upper 20s. Chance of snow 70 percent.
Saturday...Snow and rain likely. Highs in the upper 30s. Chance of precipitation 70 percent.
Saturday Night...Rain and snow likely. Lows in the upper 20s. Chance of precipitation 70 percent.
Sunday...Snow and rain likely. Highs in the upper 30s. Chance of precipitation 70 percent.
Sunday Night...Snow likely in the evening. Rain likely. Lows in the lower 30s. Chance of precipitation 70 percent.
Monday...Mostly cloudy with a chance of rain. Highs in the mid 40s. Chance of rain 50 percent.
Monday Night...Mostly cloudy with a chance of rain in the evening, then partly cloudy with a chance of rain showers and freezing rain after midnight. Lows in the mid 20s. Chance of precipitation 50 percent.
Tuesday...A chance of rain showers in the morning. Partly sunny. Highs in the lower 40s. Chance of rain 30 percent.
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