GROTON, CT 06340 Weather Forecast & Current Conditions

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GROTON, CT
Current Weather

1:56 AM EDT JUL 8, 2026
Scattered Clouds
64°F
Feels Like: 63°F
Dewpoint: 63°F
Rel. Hum.: 97%
Visibility: 10 miles
Wind: N at 14 mph
Pressure: 29.98 inches
Last 72 hours

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GROTON, CT 06340
Weather Forecast

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TONIGHT
Mostly cloudy. A slight chance of rain early this evening. Lows around 60. North winds 10 to 15 mph. Gusts up to 30 mph, decreasing to 20 mph after midnight. Chance of rain 20 percent.
WEDNESDAY
Mostly sunny. Highs in the upper 70s. North winds 5 to 10 mph, becoming west in the afternoon.
WEDNESDAY NIGHT
Clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Southwest winds around 5 mph.
THURSDAY
Mostly sunny. Humid with highs in the lower 80s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.
THURSDAY NIGHT
Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Humid with lows in the upper 60s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the evening. Chance of rain 40 percent.
FRIDAY
Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. Heat index values in the mid 90s in the afternoon.
FRIDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 60s. Chance of rain 50 percent.
SATURDAY
Mostly sunny. Highs in the lower 80s.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s.
SUNDAY
Sunny. Highs in the lower 80s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s.
MONDAY
Sunny. Highs in the mid 80s.
MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s.

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 PM CDT  7/ 7/2026
Wednesday
8 JUL 2026
GROTON, CT 06340 weather forecast Day 1, 0 hours 2 AM 65° 65° Partly Cloudy 6%

0% Thunder
( 2% severe)
NA   9 90% 62°
Low 62° GROTON, CT 06340 weather forecast Day 1, 3 hours 5 AM 63° 62° Partly Cloudy NA   10 93% 61°
High 83° GROTON, CT 06340 weather forecast Day 1, 6 hours 8 AM 68° 68° Partly Cloudy 1%

0% Thunder
( 0% severe)
N   9 81% 62°

Clear



GROTON, CT 06340 weather forecast Day 1, 9 hours 11 AM 77° 79° Clear N   8 64% 64°
GROTON, CT 06340 weather forecast Day 1, 12 hours 2 PM 82° 84° Clear 0%

0% Thunder
( 1% severe)
WSW   6 56% 65°
GROTON, CT 06340 weather forecast Day 1, 15 hours 5 PM 82° 84° Clear SW   6 56% 65°
GROTON, CT 06340 weather forecast Day 1, 18 hours 8 PM 75° 75° Clear 0%

0% Thunder
( 1% severe)
SW   6 74% 66°
GROTON, CT 06340 weather forecast Day 1, 21 hours 11 PM 70° 70° Clear WSW   6 87% 66°
Thursday
9 JUL 2026
GROTON, CT 06340 weather forecast Day 2, 0 hours 2 AM 69° 69° Clear 1%

0% Thunder
( 0% severe)
WSW   7 90% 66°
Low 65° GROTON, CT 06340 weather forecast Day 2, 3 hours 5 AM 68° 68° Mostly Cloudy WSW   7 97% 67°
High 85° GROTON, CT 06340 weather forecast Day 2, 6 hours 8 AM 75° 75° Partly Cloudy 3%

0% Thunder
( 3% severe)
WSW   8 84% 70°

Partly Cloudy



GROTON, CT 06340 weather forecast Day 2, 9 hours 11 AM 83° 88° Mostly Cloudy SW   12 70% 72°
GROTON, CT 06340 weather forecast Day 2, 12 hours 2 PM 85° 91° Partly Cloudy 1%

0% Thunder
( 13% severe)
SW   13 65% 72°
GROTON, CT 06340 weather forecast Day 2, 15 hours 5 PM 84° 89° Clear SSW   14 65% 71°
GROTON, CT 06340 weather forecast Day 2, 18 hours 8 PM 78° 80° Mostly Cloudy 18%
RAIN
<.01 in
0% Thunder
( 14% severe)
SW   10 79% 71°
GROTON, CT 06340 weather forecast Day 2, 21 hours 11 PM 74° 74° Mostly Cloudy SW   8 90% 71°

GROTON, CT extended weather forecast

Friday
10 JUL 2026
Saturday
11 JUL 2026
Sunday
12 JUL 2026
Monday
13 JUL 2026
Tuesday
14 JUL 2026
Low 69° Low 67° Low 62° Low 61° Low 64°
High 84° High 81° High 79° High 77° High 81°
GROTON, CT 06340 weather forecast Day 3 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
Overcast
68% Rain
Mostly Cloudy
30% Rain
Partly Cloudy
14% Rain
Partly Cloudy
17% Rain
Clear
16% Rain
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