Marine Weather Net

Portland, ME Weather Forecast


Marine Forecast: Casco Bay


Portland, Maine

 Lat: 43.66N, Lon: 70.26W

Current Conditions Updated: 651 PM EST FRI FEB 27 2026

Partly Cloudy
Temp: 31°F
  • Humidity:
  • 78%
  • Winds:
  • 3 MPH WSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.13 in.
  • Dewpoint:
  • 25°F
  • Heat index:
  • 31°F

  • Sunrise:
  • 6:23 AM EST
  • Sunset:
  • 5:23 PM EST
  • Moonrise:
  • 12:59 PM EST
  • Moonset:
  • 4:19 AM EST

TONIGHT

CLEARING

Lo: 25°F

SATURDAY

PARTLY SUNNY
Hi: 45°F
Lo: 21°F

SUNDAY

CHANCE OF SNOW
Hi: 31°F
Lo: 4°F
Precip: 50%

MONDAY

MOSTLY SUNNY
Hi: 21°F
Lo: 8°F
Weather Forecast In Detail:
Forecast Issued: 622 PM EST Fri Feb 27 2026

Tonight...Partly cloudy this evening, then clearing. Lows in the mid 20s. Light and variable winds. Gusts up to 20 mph this evening.
Saturday...Partly sunny. Highs in the mid 40s. South winds 10 to 15 mph with gusts up to 30 mph.
Saturday Night...Partly cloudy. Lows in the lower 20s. West winds around 10 mph, becoming north with gusts up to 20 mph after midnight.
Sunday...Mostly cloudy with a 50 percent chance of snow. Highs in the lower 30s. North winds around 10 mph with gusts up to 20 mph.
Sunday Night...Mostly clear. Lows around 4 above. Northwest winds around 10 mph with gusts up to 20 mph. Wind chill values as low as 6 below after midnight.
Monday...Mostly sunny. Highs in the lower 20s.
Monday Night...Mostly clear. Lows 5 to 10 above.
Tuesday...Partly sunny in the morning, then mostly cloudy with a chance of snow in the afternoon. Highs in the mid 30s. Chance of snow 40 percent.
Tuesday Night...Mostly cloudy with a chance of snow. A chance of rain after midnight. Lows in the mid 20s. Chance of precipitation 50 percent.
Wednesday...Partly sunny. A chance of snow in the morning. Highs in the mid 40s. Chance of snow 40 percent.
Wednesday Night...Mostly clear. Lows in the lower 20s.
Thursday...Partly sunny in the morning, then mostly cloudy with a chance of rain and snow in the afternoon. Highs in the lower 40s. Chance of precipitation 30 percent.
Thursday Night...A chance of rain. A chance of snow in the evening, then snow likely after midnight. Lows in the lower 20s. Chance of precipitation 60 percent.
Friday...Cloudy with a 50 percent chance of snow. Highs in the upper 30s.
SHARE THIS PAGE: