Marine Weather Net

Belfast, ME Weather Forecast


Marine Forecast: Penobscot Bay


Belfast, Maine

 Lat: 44.43N, Lon: 69.01W

Current Conditions Updated: 556 PM EDT WED SEP 23 2026

Clear


Temp: 55°F
  • Humidity:
  • 79%
  • Winds:
  • 6 MPH ESE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.56 in.
  • Dewpoint:
  • 49°F
  • Heat index:
  • 55°F

  • Sunrise:
  • 6:21 AM EDT
  • Sunset:
  • 6:32 PM EDT
  • Moonrise:
  • 5:14 PM EDT
  • Moonset:
  • 2:49 AM EDT

TONIGHT

CLEAR

Lo: 35°F

THURSDAY

SUNNY

Hi: 65°F
Lo: 49°F

FRIDAY

PARTLY SUNNY
Hi: 69°F
Lo: 50°F

SATURDAY

RAIN
Hi: 61°F
Lo: 50°F
Precip: 70%
Weather Forecast In Detail:
Forecast Issued: 500 PM EDT Wed Sep 23 2026

FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM EDT THURSDAY
Tonight...Clear. Chance of frost in sheltered locations after midnight. Lows in the mid 30s. Light and variable winds.
Thursday...Chance of frost in sheltered locations in the morning. Sunny. Highs in the mid 60s. Light and variable winds.
Thursday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Light and variable winds, becoming north around 10 mph after midnight.
Friday...Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph.
Friday Night...Cloudy with a 50 percent chance of rain. Lows around 50.
Saturday...Rain likely. Highs in the lower 60s. Chance of rain 70 percent.
Saturday Night...Rain likely. Lows around 50. Chance of rain 70 percent.
Sunday...Rain likely. Highs around 60. Chance of rain 70 percent.
Sunday Night...Rain likely. Lows around 50. Chance of rain 70 percent.
Monday...Showers likely. Highs around 60. Chance of rain 70 percent.
Monday Night...Mostly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 50 percent.
Tuesday...Partly sunny. Highs in the mid 60s.
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