Marine Weather Net

Portland, ME Weather Forecast


Marine Forecast: Casco Bay


Portland, Maine

 Lat: 43.66N, Lon: 70.26W

Current Conditions Updated: 251 PM EDT FRI OCT 3 2025

Partly Cloudy
Temp: 68°F
  • Humidity:
  • 52%
  • Winds:
  • 9 MPH S
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.19 in.
  • Dewpoint:
  • 50°F
  • Heat index:
  • 68°F

  • Sunrise:
  • 6:38 AM EDT
  • Sunset:
  • 6:18 PM EDT
  • Moonrise:
  • 4:46 PM EDT
  • Moonset:
  • 2:08 AM EDT

REST OF TODAY

MOSTLY SUNNY
Hi: 70°F
Lo: 49°F

SATURDAY

MOSTLY SUNNY
Hi: 79°F
Lo: 51°F

SUNDAY

MOSTLY SUNNY
Hi: 75°F
Lo: 51°F

MONDAY

MOSTLY SUNNY
Hi: 79°F
Lo: 51°F
Weather Forecast In Detail:
Forecast Issued: 849 AM EDT Fri Oct 03 2025

Rest Of Today...Mostly sunny. Highs around 70. Light and variable winds, becoming southwest around 10 mph with gusts up to 20 mph this afternoon.
Tonight...Mostly clear. Lows in the upper 40s. Light and variable winds.
Saturday...Mostly sunny. Highs in the upper 70s. Light and variable winds.
Saturday Night...Mostly clear. Lows in the lower 50s. Light and variable winds.
Sunday...Mostly sunny. Highs in the mid 70s. Light and variable winds.
Sunday Night...Mostly clear. Lows in the lower 50s.
Monday...Mostly sunny. Highs in the upper 70s.
Monday Night...Mostly clear. Lows in the lower 50s.
Tuesday...Partly sunny. Highs in the upper 70s.
Tuesday Night...Partly cloudy in the evening, then showers likely after midnight. Lows in the mid 50s. Chance of rain 60 percent.
Wednesday...Showers likely. Highs in the upper 60s. Chance of rain 70 percent.
Wednesday Night...Partly cloudy. Scattered showers in the evening. Lows in the lower 40s. Chance of rain 50 percent.
Thursday...Mostly sunny. Highs around 60.
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