Marine Weather Net

Castine, ME Weather Forecast


Marine Forecast: Penobscot Bay


Castine, Maine

 Lat: 44.39N, Lon: 68.8W

Current Conditions Updated: 732 AM EDT THU JUL 17 2025

Fog
Temp: 64°F
  • Humidity:
  • 100%
  • Winds:
  • N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.89 in.
  • Dewpoint:
  • 64°F
  • Heat index:
  • 64°F

  • Sunrise:
  • 5:04 AM EDT
  • Sunset:
  • 8:14 PM EDT
  • Moonrise:
  • 11:34 PM EDT
  • Moonset:
  • 12:48 PM EDT

TODAY

CHANCE OF T-STORM
Hi: 75°F
Lo: 65°F
Precip: 20%

FRIDAY

SUNNY

Hi: 80°F
Lo: 59°F

SATURDAY

MOSTLY SUNNY
Hi: 79°F
Lo: 57°F

SUNDAY

PARTLY SUNNY
Hi: 75°F
Lo: 55°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 149 AM EDT Thu Jul 17 2025

DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING
Today...Mostly cloudy. Areas of fog this morning, then patchy fog this afternoon. Isolated thunderstorms this afternoon. Thunderstorms May produce gusty winds and heavy rainfall this afternoon. Visibility one quarter mile or less at Times this morning. Highs in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of precipitation 20 percent.
Tonight...Mostly cloudy with a slight chance of showers in the evening, then partly cloudy after midnight. Areas of fog. Lows in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
Friday...Sunny. Highs around 80. Northwest winds 10 to 15 mph with gusts up to 30 mph.
Friday Night...Clear. Lows in the upper 50s. Northwest winds 5 to 10 mph.
Saturday...Mostly sunny. Highs in the upper 70s. West winds around 5 mph, increasing to southwest 10 to 15 mph in the afternoon.
Saturday Night...Partly cloudy with a slight chance of showers in the evening, then mostly cloudy with a chance of showers after midnight. Patchy fog after midnight. Lows in the upper 50s. Chance of rain 50 percent.
Sunday...Mostly cloudy in the morning, then becoming partly sunny. Patchy fog in the morning. A 50 percent chance of showers. Highs in the mid 70s.
Sunday Night...Partly cloudy with a chance of showers in the evening, then clear after midnight. Lows in the mid 50s. Chance of rain 30 percent.
Monday...Sunny. Highs in the mid 70s.
Monday Night...Clear. Lows in the mid 50s.
Tuesday...Sunny in the morning, then becoming partly sunny. Highs in the upper 70s.
Tuesday Night...Partly cloudy. Lows in the upper 50s.
Wednesday...Partly sunny. Highs in the upper 70s.
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