GROTON, CT 06340 Weather Forecast & Current Conditions

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GROTON, CT
Current Weather

4:56 PM EDT APR 28, 2026
Clear
55°F
Feels Like: 52°F
Dewpoint: 37°F
Rel. Hum.: 51%
Visibility: 10 miles
Wind: ESE at 12 mph
Pressure: 30.11 inches
Last 72 hours

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GROTON, CT 06340
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Mostly sunny. Highs in the lower 60s. Southeast winds around 5 mph.
TONIGHT
Mostly cloudy in the evening, then clearing. Lows in the lower 40s. East winds around 5 mph, becoming north after midnight.
WEDNESDAY
Mostly sunny. Highs in the lower 60s. Northeast winds around 5 mph, becoming south around 5 mph in the afternoon.
WEDNESDAY NIGHT
Mostly cloudy. A chance of showers in the evening, then showers after midnight. Lows in the mid 40s. Southeast winds around 5 mph. Chance of rain 90 percent.
THURSDAY
Showers. Highs in the mid 50s. East winds around 5 mph, becoming northwest in the afternoon. Chance of rain 90 percent.
THURSDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the lower 40s. Chance of rain 40 percent.
FRIDAY
Sunny. Highs in the upper 50s.
FRIDAY NIGHT
Partly cloudy. Lows in the upper 30s.
SATURDAY
Mostly sunny. Highs in the mid 50s.
SATURDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 30s.
SUNDAY
Mostly sunny. Highs in the upper 50s.
SUNDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the lower 40s.
MONDAY
Mostly sunny. Highs in the upper 50s.

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  4/28/2026
Tuesday
28 APR 2026
GROTON, CT 06340 weather forecast Day 1, 12 hours 2 PM 57° 55° Partly Cloudy 5%

0% Thunder
( 0% severe)
SE   8 51% 39°
High 58° GROTON, CT 06340 weather forecast Day 1, 15 hours 5 PM 54° 52° Partly Cloudy SE   7 57% 39°
Partly Cloudy



GROTON, CT 06340 weather forecast Day 1, 18 hours 8 PM 50° 48° Mostly Cloudy 2%

0% Thunder
( 0% severe)
SE   5 66% 39°
GROTON, CT 06340 weather forecast Day 1, 21 hours 11 PM 47° 46° Partly Cloudy ENE   3 68% 37°
Wednesday
29 APR 2026
GROTON, CT 06340 weather forecast Day 2, 0 hours 2 AM 44° 42° Partly Cloudy 1%

0% Thunder
( 0% severe)
N   3 76% 37°
Low 40° GROTON, CT 06340 weather forecast Day 2, 3 hours 5 AM 42° 40° Partly Cloudy NNE   3 82% 37°
High 58° GROTON, CT 06340 weather forecast Day 2, 6 hours 8 AM 47° 45° Partly Cloudy 1%

0% Thunder
( 0% severe)
NE   5 76% 40°

Partly Cloudy



GROTON, CT 06340 weather forecast Day 2, 9 hours 11 AM 55° 54° Partly Cloudy SSE   5 61% 42°
GROTON, CT 06340 weather forecast Day 2, 12 hours 2 PM 55° 53° Partly Cloudy 7%

0% Thunder
( 0% severe)
S   8 64% 43°
GROTON, CT 06340 weather forecast Day 2, 15 hours 5 PM 53° 50° Mostly Cloudy S   8 69% 43°
GROTON, CT 06340 weather forecast Day 2, 18 hours 8 PM 50° 48° Mostly Cloudy 39%
RAIN
.1–.25 in
0% Thunder
( 4% severe)
S   6 74% 42°
GROTON, CT 06340 weather forecast Day 2, 21 hours 11 PM 48° 45° Mostly Cloudy SE   6 83% 43°
Thursday
30 APR 2026
GROTON, CT 06340 weather forecast Day 3, 0 hours 2 AM 47° 45° Mostly Cloudy 80%
RAIN
***
0% Thunder
( 6% severe)
ESE   5 89% 44°
Low 45° GROTON, CT 06340 weather forecast Day 3, 3 hours 5 AM 46° 44° Mostly Cloudy ESE   5 93% 44°
High 56° GROTON, CT 06340 weather forecast Day 3, 6 hours 8 AM 49° 47° Mostly Cloudy 73%
RAIN
***
0% Thunder
( 3% severe)
E   5 89% 46°

Mostly Cloudy

Rain Likely

GROTON, CT 06340 weather forecast Day 3, 9 hours 11 AM 52° 50° Mostly Cloudy ENE   7 83% 47°
GROTON, CT 06340 weather forecast Day 3, 15 hours 2 PM 53° 50° Mostly Cloudy 40%
RAIN
1–2 in
0% Thunder
( 1% severe)
WNW   8 77% 46°
GROTON, CT 06340 weather forecast Day 3, 18 hours 5 PM 53° 50° Mostly Cloudy WNW   9 71% 44°
GROTON, CT 06340 weather forecast Day 3, 21 hours 8 PM 51° 48° Partly Cloudy     WNW   9 68% 41°

GROTON, CT extended weather forecast

Friday
1 MAY 2026
Saturday
2 MAY 2026
Sunday
3 MAY 2026
Monday
4 MAY 2026
Tuesday
5 MAY 2026
Low 41° Low 40° Low 39° Low 41° Low 45°
High 59° High 54° High 56° High 60° High 61°
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
Partly Cloudy
34% Rain
Mostly Cloudy
34% Rain
Mostly Cloudy
52% Rain
Partly Cloudy
21% Rain
Overcast
35% Rain
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