Marine Weather Net

Portland, ME Weather Forecast


Marine Forecast: Casco Bay


Portland, Maine

 Lat: 43.66N, Lon: 70.26W

Current Conditions Updated: 351 PM EDT SUN JUN 7 2026

Overcast
Temp: 65°F
  • Humidity:
  • 93%
  • Winds:
  • 6 MPH NE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.75 in.
  • Dewpoint:
  • 63°F
  • Heat index:
  • 65°F

  • Sunrise:
  • 4:58 AM EDT
  • Sunset:
  • 8:18 PM EDT
  • Moonrise:
  • 12:37 AM EDT
  • Moonset:
  • 11:42 AM EDT

THIS AFTERNOON

THUNDER STORMS
Hi: 71°F
Lo: 55°F
Precip: 90%

MONDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 55°F

TUESDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 59°F

WEDNESDAY

PARTLY SUNNY
Hi: 85°F
Lo: 59°F
Weather Forecast In Detail:
Forecast Issued: 223 PM EDT Sun Jun 07 2026

This Afternoon...Showers with isolated thunderstorms. Highs in the lower 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.
Tonight...Partly cloudy in the evening, then clearing. Less humid with lows in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph in the evening, becoming light and variable.
Monday...Mostly sunny. Highs in the lower 80s. Light and variable winds.
Monday Night...Mostly clear. Lows in the mid 50s. Light and variable winds.
Tuesday...Mostly sunny. Highs in the lower 80s. Light and variable winds, becoming southwest around 10 mph in the afternoon.
Tuesday Night...Partly cloudy. Lows in the upper 50s.
Wednesday...Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 80s.
Wednesday Night...Mostly cloudy with a chance of showers. Lows in the upper 50s. Chance of rain 30 percent.
Thursday...Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. Highs in the lower 80s. Chance of rain 30 percent.
Thursday Night...Partly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 30 percent.
Friday...Partly sunny. Highs in the upper 70s.
Friday Night...Partly cloudy. Lows in the upper 50s.
Saturday...Partly sunny. Highs in the mid 80s.
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