Marine Weather Net

Castine, ME Weather Forecast


Marine Forecast: Penobscot Bay


Castine, Maine

 Lat: 44.39N, Lon: 68.8W

Current Conditions Updated: 656 PM EDT WED OCT 14 2026

Overcast
Temp: 56°F
  • Humidity:
  • 80%
  • Winds:
  • 5 MPH NW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.77 in.
  • Dewpoint:
  • 50°F
  • Heat index:
  • 56°F

  • Sunrise:
  • 6:46 AM EDT
  • Sunset:
  • 5:53 PM EDT
  • Moonrise:
  • 11:18 AM EDT
  • Moonset:
  • 7:37 PM EDT

TONIGHT

CLEAR

Lo: 41°F

THURSDAY

SUNNY

Hi: 55°F
Lo: 39°F

FRIDAY

RAIN
Hi: 55°F
Lo: 41°F
Precip: 100%

SATURDAY

PARTLY SUNNY
Hi: 49°F
Lo: 31°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 359 PM EDT Wed Oct 14 2026

Tonight...Clear. Lows in the lower 40s. Northwest winds 10 to 15 mph with gusts up to 30 mph.
Thursday...Sunny. Highs in the mid 50s. Northwest winds 10 to 15 mph with gusts up to 30 mph.
Thursday Night...Mostly clear in the evening, then becoming mostly cloudy. Lows in the upper 30s. Northwest winds 5 to 10 mph, becoming northeast after midnight.
Friday...Rain. Patchy fog in the afternoon. Highs in the mid 50s. Southeast winds 5 to 10 mph, increasing to 15 to 20 mph in the afternoon. Chance of rain near 100 percent.
Friday Night...Patchy fog in the evening. Rain. Lows in the lower 40s. South winds 10 to 15 mph, becoming west 15 to 20 mph after midnight. Chance of rain near 100 percent.
Saturday...Partly sunny. A chance of rain in the morning. Highs in the upper 40s. Chance of rain 50 percent.
Saturday Night...Clear. Lows in the lower 30s.
Sunday...Sunny. Highs around 50.
Sunday Night...Clear. Lows in the upper 30s.
Monday...Sunny. Highs in the mid 50s.
Monday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s.
Tuesday...Mostly sunny. Highs in the lower 60s.
Tuesday Night...Mostly clear. Lows around 40.
Wednesday...Sunny. Highs in the upper 50s.
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