Marine Weather Net

Groton, CT Weather Forecast


Marine Forecast:


Groton, Connecticut

 Lat: 41.35N, Lon: 72.08W

Current Conditions Updated: 956 AM EDT WED AUG 19 2026

Clear


Temp: 79°F
  • Humidity:
  • 69%
  • Winds:
  • 5 MPH N
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.88 in.
  • Dewpoint:
  • 68°F
  • Heat index:
  • 81°F

  • Sunrise:
  • 6:00 AM EDT
  • Sunset:
  • 7:40 PM EDT
  • Moonrise:
  • 1:41 PM EDT
  • Moonset:
  • 10:52 PM EDT

TODAY

MOSTLY SUNNY
Hi: 81°F
Lo: 67°F

THURSDAY

PARTLY SUNNY
Hi: 81°F
Lo: 61°F
Precip: 40%

FRIDAY

MOSTLY SUNNY
Hi: 80°F
Lo: 61°F

SATURDAY

PARTLY SUNNY
Hi: 75°F
Lo: 61°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 532 AM EDT Wed Aug 19 2026

Today...Mostly cloudy, then becoming mostly sunny this morning, then becoming sunny. Patchy fog early. Humid with highs in the lower 80s. Light and variable winds, becoming southwest 5 to 10 mph.
Tonight...Partly cloudy. Humid with lows in the upper 60s. Southwest winds around 5 mph.
Thursday...Partly sunny. A chance of showers in the afternoon. Humid with highs in the lower 80s. Northwest winds around 5 mph, becoming west around 5 mph in the afternoon. Chance of rain 40 percent.
Thursday Night...Mostly cloudy with showers likely in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 60s. Northwest winds around 5 mph. Chance of rain 60 percent.
Friday...Mostly sunny. Highs around 80. North winds around 5 mph, becoming east in the afternoon.
Friday Night...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s.
Saturday...Partly sunny in the morning, then becoming mostly cloudy. A 50 percent chance of showers. Highs in the mid 70s.
Saturday Night...Mostly cloudy with a 50 percent chance of showers. Lows in the lower 60s.
Sunday...Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of showers. Highs in the upper 70s.
Sunday Night...Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 30 percent.
Monday...Mostly sunny. Highs around 80.
Monday Night...Mostly clear. Lows in the upper 50s.
Tuesday...Sunny. Highs in the upper 70s.
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