Marine Weather Net

Portland, ME Weather Forecast


Marine Forecast: Casco Bay


Portland, Maine

 Lat: 43.66N, Lon: 70.26W

Current Conditions Updated: 1151 AM EDT SAT OCT 25 2025

Partly Cloudy
Temp: 52°F
  • Humidity:
  • 56%
  • Winds:
  • N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.29 in.
  • Dewpoint:
  • 37°F
  • Heat index:
  • 52°F

  • Sunrise:
  • 7:05 AM EDT
  • Sunset:
  • 5:41 PM EDT
  • Moonrise:
  • 11:30 AM EDT
  • Moonset:
  • 7:40 PM EDT

TODAY

PARTLY SUNNY
Hi: 55°F
Lo: 35°F

SUNDAY

PARTLY SUNNY
Hi: 51°F
Lo: 35°F
Precip: 20%

MONDAY

PARTLY SUNNY
Hi: 51°F
Lo: 39°F

TUESDAY

PARTLY SUNNY
Hi: 51°F
Lo: 39°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 605 AM EDT Sat Oct 25 2025

Today...Partly sunny. Highs in the mid 50s. Northwest winds around 10 mph.
Tonight...Partly cloudy. Lows in the mid 30s. Light and variable winds.
Sunday...Partly sunny. A slight chance of rain showers in the afternoon. Highs in the lower 50s. Light and variable winds. Chance of rain 20 percent.
Sunday Night...Partly cloudy with scattered rain showers. Lows in the mid 30s. Light and variable winds. Chance of rain 40 percent.
Monday...Partly sunny. Highs in the lower 50s. North winds around 10 mph.
Monday Night...Partly cloudy with scattered showers. Lows in the upper 30s. Chance of rain 40 percent.
Tuesday...Partly sunny with scattered showers. Highs in the lower 50s. Chance of rain 40 percent.
Tuesday Night...Mostly cloudy in the evening, then becoming partly cloudy. Scattered showers. Lows in the upper 30s. Chance of rain 40 percent.
Wednesday...Partly sunny with scattered showers. Highs in the lower 50s. Chance of rain 30 percent.
Wednesday Night...Mostly cloudy with scattered showers. Lows in the upper 30s. Chance of rain 40 percent.
Thursday...Partly sunny with scattered showers. Highs in the mid 50s. Chance of rain 40 percent.
Thursday Night...Mostly cloudy in the evening, then becoming partly cloudy. Scattered showers. Lows in the upper 30s. Chance of rain 50 percent.
Friday...Partly sunny with scattered showers. Highs in the upper 50s. Chance of rain 40 percent.
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