Marine Weather Net

Castine, ME Weather Forecast


Marine Forecast: Penobscot Bay


Castine, Maine

 Lat: 44.39N, Lon: 68.8W

Current Conditions Updated: 256 PM EST MON NOV 17 2025

Clear


Temp: 38°F
  • Humidity:
  • 59%
  • Winds:
  • 12 MPH WNW
  • Gusts:
  • 18 MPH
  • Barometer:
  • 29.36 in.
  • Dewpoint:
  • 25°F
  • Heat index:
  • 38°F

  • Sunrise:
  • 6:31 AM EST
  • Sunset:
  • 4:05 PM EST
  • Moonrise:
  • 4:00 AM EST
  • Moonset:
  • 2:30 PM EST

TONIGHT

MOSTLY CLEAR
Lo: 30°F

TUESDAY

SUNNY

Hi: 41°F
Lo: 29°F

WEDNESDAY

SUNNY

Hi: 41°F
Lo: 29°F

THURSDAY

PARTLY SUNNY
Hi: 41°F
Lo: 31°F
Weather Forecast In Detail:
Forecast Issued: 206 PM EST Mon Nov 17 2025

Tonight...Mostly clear. Lows around 30. West winds 15 to 20 mph with gusts up to 30 mph.
Tuesday...Sunny. Highs in the lower 40s. West winds 15 to 20 mph with gusts up to 30 mph.
Tuesday Night...Clear. Lows in the upper 20s. West winds 10 to 15 mph.
Wednesday...Sunny. Highs in the lower 40s. West winds 5 to 10 mph.
Wednesday Night...Mostly clear. Lows in the upper 20s. Northwest winds around 5 mph.
Thursday...Partly sunny. Highs in the lower 40s.
Thursday Night...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 30s.
Friday...Mostly cloudy. A chance of rain in the morning, then rain likely in the afternoon. Highs in the upper 40s. Chance of rain 60 percent.
Friday Night...Mostly cloudy. Rain likely, mainly in the evening. Lows in the mid 30s. Chance of rain 70 percent.
Saturday...Partly sunny. A chance of rain in the morning. Highs in the mid 40s. Chance of rain 40 percent.
Saturday Night...Partly cloudy. Lows in the upper 20s.
Sunday...Mostly sunny in the morning, then becoming partly sunny. Highs in the lower 40s.
Sunday Night...Partly cloudy. Lows around 30.
Monday...Partly sunny. Highs in the mid 40s.
SHARE THIS PAGE: