GROTON, CT 06340 Weather Forecast & Current Conditions

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06340 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
GROTON, CT Current Weather
3:56 AM EDT AUG 12, 2026
Clear 70°F
Feels Like:	70°F
Dewpoint:	66°F
Rel. Hum.:	87%
Visibility:	10 miles
Wind:	NNW at 6 mph
Pressure:	29.76 inches
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
Sunny. A slight chance of showers this morning. Highs in the mid 80s. North winds around 5 mph, becoming southwest around 5 mph this afternoon. Chance of rain 20 percent.

TONIGHT
Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. West winds around 5 mph. Chance of rain 20 percent.

THURSDAY
Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the lower 80s. West winds 5 to 10 mph. Chance of rain 30 percent.

THURSDAY NIGHT
Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 60s. Northwest winds around 5 mph. Chance of rain 30 percent.

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

FRIDAY NIGHT
Mostly clear. Lows in the lower 60s.

SATURDAY
Sunny. Highs in the upper 70s.

SATURDAY NIGHT
Mostly clear. Lows around 60.

SUNDAY
Partly sunny. A chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.

SUNDAY NIGHT
Showers likely. Lows in the mid 60s. Chance of rain 70 percent.

MONDAY
Partly sunny. Showers likely, mainly in the morning. Highs around 80. Chance of rain 70 percent.

MONDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the lower 60s. Chance of rain 30 percent.

TUESDAY
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 8/11/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
12 AUG 2026

2 AM

71°

71°

Mostly Cloudy

7%

0% Thunder
( 1% severe)

NW 2

81%

65°

Low 68°

5 AM

69°

69°

Mostly Cloudy

N 6

78%

62°

High 83°

8 AM

72°

72°

Partly Cloudy

5%

0% Thunder
( 0% severe)

N 6

73%

63°

Partly Cloudy

11 AM

80°

81°

Partly Cloudy

N 5

56%

63°

2 PM

83°

84°

Clear

2%

0% Thunder
( 3% severe)

SW 7

49%

62°

5 PM

82°

83°

Clear

SW 7

53%

63°

8 PM

76°

78°

Clear

11%
RAIN
<.01 in

0% Thunder
( 9% severe)

WSW 3

69%

65°

11 PM

72°

72°

Partly Cloudy

WSW 2

79%

65°

Thursday
13 AUG 2026

2 AM

71°

71°

Partly Cloudy

20%
RAIN
.1–.25 in

0% Thunder
( 19% severe)

WSW 2

81%

65°

Low 66°

5 AM

69°

69°

Partly Cloudy

W 2

87%

65°

High 83°

8 AM

74°

74°

Partly Cloudy

32%
RAIN
***

0% Thunder
( 7% severe)

W 5

79%

67°

Partly Cloudy

Chance of Rain

11 AM

80°

83°

Partly Cloudy

W 8

67%

68°

2 PM

83°

86°

Mostly Cloudy

24%
RAIN
.25–.5 in

0% Thunder
( 7% severe)

SW 10

59%

67°

5 PM

83°

86°

Partly Cloudy

WSW 9

61%

68°

8 PM

77°

79°

Partly Cloudy

8%

0% Thunder
( 4% severe)

W 5

74%

68°

11 PM

73°

73°

Partly Cloudy

W 3

81%

67°


GROTON, CT extended weather forecast
Friday 14 AUG 2026	Saturday 15 AUG 2026	Sunday 16 AUG 2026	Monday 17 AUG 2026	Tuesday 18 AUG 2026
Low 64°	Low 60°	Low 63°	Low 68°	Low 64°
High 82°	High 77°	High 79°	High 82°	High 80°

Partly Cloudy 3% Rain	Partly Cloudy 22% Rain	Mostly Cloudy 48% Rain	Mostly Cloudy 56% Rain	Partly Cloudy 21% Rain

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