Marine Weather Net

Groton, CT Weather Forecast


Marine Forecast:


Groton, Connecticut

 Lat: 41.35N, Lon: 72.08W

Current Conditions Updated: 856 PM EST MON DEC 15 2025

Clear


Temp: 24°F
  • Humidity:
  • 54%
  • Winds:
  • 8 MPH W
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.16 in.
  • Dewpoint:
  • 10°F
  • Heat index:
  • 24°F

  • Sunrise:
  • 7:05 AM EST
  • Sunset:
  • 4:18 PM EST
  • Moonrise:
  • 3:04 AM EST
  • Moonset:
  • 1:17 PM EST

TONIGHT

MOSTLY CLOUDY
Lo: 19°F

TUESDAY

SUNNY

Hi: 35°F
Lo: 25°F

WEDNESDAY

MOSTLY SUNNY
Hi: 45°F
Lo: 25°F

THURSDAY

MOSTLY SUNNY
Hi: 51°F
Lo: 41°F
Weather Forecast In Detail:
Forecast Issued: 643 PM EST Mon Dec 15 2025

Tonight...Mostly cloudy. Lows around 19. West winds 5 to 10 mph with gusts up to 20 mph.
Tuesday...Sunny. Highs in the mid 30s. West winds 5 to 10 mph.
Tuesday Night...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 20s. Southwest winds 5 to 10 mph. Gusts up to 25 mph after midnight.
Wednesday...Mostly sunny. Highs in the mid 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Wednesday Night...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 20s. West winds 5 to 10 mph. Gusts up to 20 mph in the evening.
Thursday...Mostly sunny. Highs in the lower 50s.
Thursday Night...Mostly cloudy. A chance of rain in the evening, then rain after midnight. Not as cool with lows in the lower 40s. Chance of rain 90 percent.
Friday...Rain likely in the morning, then partly sunny in the afternoon. Breezy with highs in the mid 50s. Temperature falling into the mid 40s in the afternoon. Chance of rain 70 percent.
Friday Night...Partly cloudy in the evening, then becoming mostly clear. Cooler with lows in the lower 20s.
Saturday...Mostly sunny. Highs in the lower 40s.
Saturday Night...Mostly cloudy. Lows around 30.
Sunday...Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 40s.
Sunday Night...Partly cloudy. Lows in the mid 20s.
Monday...Mostly sunny. Highs in the upper 30s.
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