GROTON, CT 06340 Weather Forecast & Current Conditions

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GROTON, CT
Current Weather

10:56 PM EDT JUN 23, 2026
Clear
63°F
Feels Like: 63°F
Dewpoint: 63°F
Rel. Hum.: 100%
Visibility: 10 miles
Wind: Calm
Pressure: 29.85 inches
Last 72 hours

Local Area Snow Depth

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GROTON, CT 06340
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Widespread showers. Near steady temperature in the upper 60s. North winds around 5 mph. Chance of rain 90 percent.
TONIGHT
Mostly cloudy. Widespread showers in the evening. Patchy fog. Lows around 60. Northwest winds 5 to 10 mph. Chance of rain 90 percent.
WEDNESDAY
Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph.
WEDNESDAY NIGHT
Mostly clear. Lows around 60. West winds around 5 mph.
THURSDAY
Sunny. Highs in the lower 80s. Southwest winds 5 to 10 mph.
THURSDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with showers likely after midnight. Lows in the lower 60s. Chance of rain 70 percent.
FRIDAY
Mostly cloudy with showers likely in the morning, then partly sunny with a chance of showers in the afternoon. Highs around 80. Chance of rain 70 percent.
FRIDAY NIGHT
Mostly cloudy. A chance of showers. Lows in the lower 60s. Chance of rain 50 percent.
SATURDAY
Partly sunny with a 50 percent chance of showers. Highs in the upper 70s.
SATURDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 50 percent.
SUNDAY
Sunny. Highs in the lower 80s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
MONDAY
Mostly sunny. Highs in the mid 80s.

Visible Weather Satellite
GROTON, CT 06340
Infrared Weather Satellite
GROTON, CT 06340
NEXRAD Weather Radar
GROTON, CT 06340

GROTON, CT 3 hourly weather forecast

weather forecast created  7:00 AM CDT  6/23/2026
Tuesday
23 JUN 2026
GROTON, CT 06340 weather forecast Day 1, 12 hours 2 PM 74° 74° Mostly Cloudy 83%
RAIN
***
0% Thunder
( 6% severe)
NW   6 90% 71°
High 75° GROTON, CT 06340 weather forecast Day 1, 15 hours 5 PM 74° 74° Mostly Cloudy N   6 87% 70°
Mostly Cloudy

Rain Likely

GROTON, CT 06340 weather forecast Day 1, 18 hours 8 PM 70° 70° Mostly Cloudy 75%
RAIN
***
0% Thunder
( 3% severe)
NNW   5 93% 68°
GROTON, CT 06340 weather forecast Day 1, 21 hours 11 PM 66° 66° Mostly Cloudy NNW   2 93% 64°
Wednesday
24 JUN 2026
GROTON, CT 06340 weather forecast Day 2, 0 hours 2 AM 64° 65° Mostly Cloudy 6%

0% Thunder
( 1% severe)
NNW   5 97% 63°
Low 60° GROTON, CT 06340 weather forecast Day 2, 3 hours 5 AM 62° 61° Partly Cloudy NNW   8 93% 60°
High 83° GROTON, CT 06340 weather forecast Day 2, 6 hours 8 AM 68° 68° Clear 0%

0% Thunder
( 0% severe)
NNW   8 78% 61°

Clear



GROTON, CT 06340 weather forecast Day 2, 9 hours 11 AM 78° 79° Clear NW   9 54% 60°
GROTON, CT 06340 weather forecast Day 2, 12 hours 2 PM 82° 82° Clear 0%

0% Thunder
( 1% severe)
WNW   9 46% 59°
GROTON, CT 06340 weather forecast Day 2, 15 hours 5 PM 82° 82° Clear WNW   9 46% 59°
GROTON, CT 06340 weather forecast Day 2, 18 hours 8 PM 74° 74° Clear 0%

0% Thunder
( 1% severe)
W   6 64% 61°
GROTON, CT 06340 weather forecast Day 2, 21 hours 11 PM 68° 68° Clear W   3 73% 59°
Thursday
25 JUN 2026
GROTON, CT 06340 weather forecast Day 3, 0 hours 2 AM 64° 66° Clear 0%

0% Thunder
( 1% severe)
  CALM 78% 57°
Low 60° GROTON, CT 06340 weather forecast Day 3, 3 hours 5 AM 61° 62° Partly Cloudy   CALM 81% 55°
High 80° GROTON, CT 06340 weather forecast Day 3, 6 hours 8 AM 70° 70° Partly Cloudy 0%

0% Thunder
( 1% severe)
  CALM 66% 58°

Partly Cloudy



GROTON, CT 06340 weather forecast Day 3, 9 hours 11 AM 79° 80° Partly Cloudy SW   6 50% 59°
GROTON, CT 06340 weather forecast Day 3, 15 hours 2 PM 80° 81° Partly Cloudy 0%

0% Thunder
( 2% severe)
SSW   8 51% 60°
GROTON, CT 06340 weather forecast Day 3, 18 hours 5 PM 80° 81° Partly Cloudy S   9 52% 61°
GROTON, CT 06340 weather forecast Day 3, 21 hours 8 PM 73° 73° Partly Cloudy     S   7 68% 62°

GROTON, CT extended weather forecast

Friday
26 JUN 2026
Saturday
27 JUN 2026
Sunday
28 JUN 2026
Monday
29 JUN 2026
Tuesday
30 JUN 2026
Low 64° Low 62° Low 63° Low 62° Low 63°
High 73° High 78° High 78° High 79° High 80°
GROTON, CT 06340 weather forecast Day 4 GROTON, CT 06340 weather forecast Day 5 GROTON, CT 06340 weather forecast Day 6 GROTON, CT 06340 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Overcast
72% Rain
Mostly Cloudy
31% Rain
Partly Cloudy
23% Rain
Partly Cloudy
26% Rain
Mostly Cloudy
38% Rain
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