GROTON, CT 06340 Weather Forecast & Current Conditions

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GROTON, CT
Current Weather

7:56 AM EDT MAR 17, 2026
Broken Clouds
39°F
Feels Like: 30°F
Dewpoint: 27°F
Rel. Hum.: 61%
Visibility: 10 miles
Wind: W at 17 mph, gusts to 29
Pressure: 29.64 inches
Last 72 hours

Local Area Snow Depth

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GROTON, CT 06340
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly sunny. Highs in the lower 40s. West winds 15 to 20 mph with gusts up to 35 mph.
TONIGHT
Partly cloudy with a chance of flurries in the evening, then mostly clear after midnight. Lows in the lower 20s. Northwest winds 10 to 15 mph. Gusts up to 30 mph in the evening.
WEDNESDAY
Mostly sunny. Highs in the upper 30s. Northwest winds 5 to 10 mph with gusts up to 20 mph, becoming southwest in the afternoon.
WEDNESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 20s. South winds 5 to 10 mph.
THURSDAY
Mostly sunny. Highs in the lower 40s. South winds 5 to 10 mph.
THURSDAY NIGHT
Partly cloudy. Lows around 30.
FRIDAY
Mostly sunny. Highs in the upper 40s.
FRIDAY NIGHT
Mostly cloudy. A chance of rain after midnight. Lows in the mid 30s. Chance of rain 30 percent.
SATURDAY
Partly sunny with a 30 percent chance of rain. Highs around 50.
SATURDAY NIGHT
Mostly cloudy with a 40 percent chance of rain. Lows in the mid 30s.
SUNDAY
Mostly cloudy with a 30 percent chance of rain. Highs in the upper 40s.
SUNDAY NIGHT
Mostly cloudy. A chance of rain in the evening, then a chance of rain and snow after midnight. Lows around 30. Chance of precipitation 30 percent.
MONDAY
Partly sunny. A chance of rain in the morning. Highs in the lower 40s. Chance of rain 30 percent.

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  6:00 PM CST  3/16/2026
Tuesday
17 MAR 2026
GROTON, CT 06340 weather forecast Day 1, 0 hours 1 AM 52° 45° Mostly Cloudy 64%
RAIN
.25–.5 in
0% Thunder
( 8% severe)
S   26 89% 49°
Low 36° GROTON, CT 06340 weather forecast Day 1, 3 hours 4 AM 44° 36° Mostly Cloudy WSW   18 73% 36°
High 41° GROTON, CT 06340 weather forecast Day 1, 6 hours 7 AM 37° 27° Partly Cloudy 1%

0% Thunder
( 0% severe)
WSW   17 61% 25°

Partly Cloudy




Breezy
GROTON, CT 06340 weather forecast Day 1, 9 hours 10 AM 38° 28° Partly Cloudy W   18 44% 19°
GROTON, CT 06340 weather forecast Day 1, 12 hours 1 PM 40° 31° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   17 35% 16°
GROTON, CT 06340 weather forecast Day 1, 15 hours 4 PM 39° 31° Partly Cloudy W   15 35% 15°
GROTON, CT 06340 weather forecast Day 1, 18 hours 7 PM 35° 27° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   12 39% 14°
GROTON, CT 06340 weather forecast Day 1, 21 hours 10 PM 31° 22° Partly Cloudy WNW   12 41% 12°
Wednesday
18 MAR 2026
GROTON, CT 06340 weather forecast Day 2, 0 hours 1 AM 27° 17° Clear 0%

0% Thunder
( 0% severe)
WNW   10 40%
Low 23° GROTON, CT 06340 weather forecast Day 2, 3 hours 4 AM 25° 15° Clear WNW   9 41%
High 36° GROTON, CT 06340 weather forecast Day 2, 6 hours 7 AM 25° 17° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   7 39%

Partly Cloudy



GROTON, CT 06340 weather forecast Day 2, 9 hours 10 AM 30° 24° Partly Cloudy WNW   6 30%
GROTON, CT 06340 weather forecast Day 2, 12 hours 1 PM 34° 29° Mostly Cloudy 0%

0% Thunder
( 0% severe)
WSW   6 27%
GROTON, CT 06340 weather forecast Day 2, 15 hours 4 PM 34° 28° Partly Cloudy SSW   7 33% 10°
GROTON, CT 06340 weather forecast Day 2, 18 hours 7 PM 30° 24° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSW   6 45% 13°
GROTON, CT 06340 weather forecast Day 2, 21 hours 10 PM 29° 25° Partly Cloudy SSW   3 50% 14°

GROTON, CT extended weather forecast

Thursday
19 MAR 2026
Friday
20 MAR 2026
Saturday
21 MAR 2026
Sunday
22 MAR 2026
Monday
23 MAR 2026
Low 23° Low 30° Low 31° Low 38° Low 38°
High 41° High 47° High 49° High 53° High 47°
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
Mostly Cloudy
6% Snow
Mostly Cloudy
17% Rain/Snow
Partly Cloudy
11% Rain
Mostly Cloudy
21% Rain
Mostly Cloudy
37% Rain
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