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 WED OCT 14 2026

Light Rain
Temp: 60°F
  • Humidity:
  • 86%
  • Winds:
  • 3 MPH SE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.72 in.
  • Dewpoint:
  • 56°F
  • Heat index:
  • 60°F

  • Sunrise:
  • 6:51 AM EDT
  • Sunset:
  • 5:59 PM EDT
  • Moonrise:
  • 11:21 AM EDT
  • Moonset:
  • 7:46 PM EDT

TONIGHT

MOSTLY CLEAR
Lo: 41°F

THURSDAY

MOSTLY SUNNY
Hi: 59°F
Lo: 39°F

FRIDAY

RAIN
Hi: 59°F
Lo: 37°F
Precip: 100%

SATURDAY

PARTLY SUNNY
Hi: 50°F
Lo: 30°F
Weather Forecast In Detail:
Forecast Issued: 500 PM EDT Wed Oct 14 2026

Tonight...Mostly clear. Lows in the lower 40s. Northwest winds around 10 mph.
Thursday...Mostly sunny. Highs in the upper 50s. Northwest winds around 10 mph with gusts up to 20 mph.
Thursday Night...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 30s. Light and variable winds.
Friday...Rain. Highs in the upper 50s. Southeast winds 10 to 15 mph with gusts up to 30 mph. Chance of rain near 100 percent.
Friday Night...Mostly cloudy. Rain in the evening, then a chance of showers after midnight. Lows in the upper 30s. Southwest winds around 10 mph with gusts up to 20 mph, becoming northwest with gusts up to 30 mph after midnight. Chance of rain 90 percent.
Saturday...Partly sunny. Highs around 50.
Saturday Night...Mostly clear. Lows around 30.
Sunday...Mostly sunny. Highs in the lower 50s.
Sunday Night...Mostly clear. Lows in the lower 30s.
Monday...Mostly sunny. Highs around 60.
Monday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.
Tuesday...Mostly sunny. Highs in the lower 60s.
Tuesday Night...Mostly clear. Lows in the upper 30s.
Wednesday...Mostly sunny. Highs around 60.
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