GROTON, CT 06340 Weather Forecast & Current Conditions

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06340 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
GROTON, CT Current Weather
2:56 AM EDT JUL 29, 2026
Overcast 72°F
Feels Like:	72°F
Dewpoint:	66°F
Rel. Hum.:	81%
Visibility:	10 miles
Wind:	SE at 16 mph, gusts to 25
Pressure:
Last 72 hours
Local Area Snow Depth
Connecticut Current Weather
Connecticut MOS Forecast Weather

Weather Map

(Automated weather data from NWS/FAA)

06340 WEATHER FORECAST
10-Day model forecast maps 2026 Hurricanes	GROTON, CT 06340 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Showers with a chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs in the lower 70s. Southeast winds 10 to 15 mph with gusts up to 30 mph. Chance of rain near 100 percent.

TONIGHT
Mostly cloudy. Showers likely with a slight chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall. Humid with lows in the lower 60s. East winds 5 to 10 mph. Gusts up to 20 mph in the evening. Chance of rain 70 percent.

THURSDAY
A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Humid with highs in the mid 70s. Northeast winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 70 percent.

THURSDAY NIGHT
Mostly cloudy. Showers likely with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 60s. North winds 5 to 10 mph. Chance of rain 70 percent.

FRIDAY
Partly sunny. A slight chance of showers in the afternoon. Highs around 80. North winds around 5 mph. Chance of rain 20 percent.

FRIDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s.

SATURDAY
Mostly sunny. Highs in the lower 80s.

SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 60s.

SUNDAY
Partly sunny. Highs in the upper 70s.

SUNDAY NIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent.

MONDAY
Partly sunny with a 40 percent chance of showers. Highs in the lower 80s.

MONDAY NIGHT
Mostly cloudy with a 40 percent chance of showers. Lows in the mid 60s.

TUESDAY
Mostly sunny. Highs in the lower 80s.

06340 WEATHER SATELLITE LOOPS

Visible Weather Satellite
GROTON, CT 06340

Infrared Weather Satellite
GROTON, CT 06340

06340 WEATHER RADAR LOOP

NEXRAD Weather Radar
GROTON, CT 06340

MOS COMPUTER WEATHER FORECAST

GROTON, CT 3 hourly weather forecast

weather forecast created 7:00 PM CDT 7/28/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
29 JUL 2026

2 AM

70°

70°

Mostly Cloudy

89%
RAIN
***

0% Thunder
( 30% severe)

SE 10

90%

67°

Low 68°

5 AM

69°

69°

Mostly Cloudy

SE 13

97%

68°

High 73°

8 AM

70°

70°

Mostly Cloudy

93%
RAIN
***

0% Thunder
( 19% severe)

SE 15

93%

68°

Mostly Cloudy

Rain

11 AM

72°

72°

Mostly Cloudy

ESE 16

93%

70°

2 PM

72°

72°

Mostly Cloudy

71%
RAIN
***

0% Thunder
( 29% severe)

SE 16

97%

71°

5 PM

72°

72°

Mostly Cloudy

ESE 13

93%

70°

8 PM

70°

70°

Mostly Cloudy

52%
RAIN
***

0% Thunder
( 15% severe)

E 8

97%

69°

11 PM

68°

68°

Mostly Cloudy

ENE 6

100%

68°

Thursday
30 JUL 2026

2 AM

67°

67°

Mostly Cloudy

28%
RAIN
.25–.5 in

0% Thunder
( 11% severe)

E 6

100%

67°

Low 63°

5 AM

67°

67°

Mostly Cloudy

E 7

100%

67°

High 74°

8 AM

69°

69°

Mostly Cloudy

35%
RAIN
.5–1 in

0% Thunder
( 15% severe)

ENE 8

93%

67°

Mostly Cloudy

Chance of Rain

11 AM

73°

73°

Mostly Cloudy

N 12

84%

68°

2 PM

74°

74°

Mostly Cloudy

47%
RAIN
.25–.5 in

0% Thunder
( 22% severe)

N 12

84%

69°

5 PM

73°

73°

Mostly Cloudy

N 10

84%

68°

8 PM

70°

70°

Mostly Cloudy

11%
RAIN
.01–.1 in

0% Thunder
( 7% severe)

N 8

87%

66°

11 PM

66°

66°

Mostly Cloudy

N 7

93%

64°


GROTON, CT extended weather forecast
Friday 31 JUL 2026	Saturday 1 AUG 2026	Sunday 2 AUG 2026	Monday 3 AUG 2026	Tuesday 4 AUG 2026
Low 64°	Low 64°	Low 66°	Low 66°	Low 66°
High 76°	High 77°	High 75°	High 79°	High 81°

Overcast 49% Rain	Partly Cloudy 29% Rain	Overcast 58% Rain	Mostly Cloudy 65% Rain	Partly Cloudy 28% Rain

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