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 19, 2026
Overcast 70°F
Feels Like:	70°F
Dewpoint:	70°F
Rel. Hum.:	100%
Visibility:	10 miles
Wind:	NE at 3 mph
Pressure:	29.87 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. Highs in the lower 80s. Southwest winds 5 to 10 mph.

TONIGHT
Partly cloudy. Humid with lows in the upper 60s. Southwest winds around 5 mph.

THURSDAY
Partly sunny. A chance of showers in the afternoon. Humid with highs in the lower 80s. Northwest winds around 5 mph, becoming west around 5 mph in the afternoon. Chance of rain 40 percent.

THURSDAY NIGHT
Mostly cloudy with showers likely in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 60s. Northwest winds around 5 mph. Chance of rain 60 percent.

FRIDAY
Mostly sunny. Highs around 80. North winds around 5 mph, becoming east in the afternoon.

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

SATURDAY
Partly sunny in the morning, then becoming mostly cloudy. A 50 percent chance of showers. Highs in the mid 70s.

SATURDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the lower 60s.

SUNDAY
Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of showers. Highs in the upper 70s.

SUNDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 30 percent.

MONDAY
Mostly sunny. Highs around 80.

MONDAY NIGHT
Mostly clear. Lows in the upper 50s.

TUESDAY
Sunny. Highs in the upper 70s.

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 8/18/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
19 AUG 2026

2 AM

69°

69°

Partly Cloudy

6%

0% Thunder
( 2% severe)

WSW 1

100%

69°

Low 66°

5 AM

67°

67°

Mostly Cloudy

CALM

97%

66°

High 82°

8 AM

71°

71°

Partly Cloudy

13%
RAIN
<.01 in

0% Thunder
( 2% severe)

CALM

87%

67°

Partly Cloudy

11 AM

79°

81°

Partly Cloudy

SW 6

69%

68°

2 PM

82°

85°

Clear

1%

0% Thunder
( 0% severe)

SSW 9

61%

67°

5 PM

82°

85°

Partly Cloudy

SSW 8

63%

68°

8 PM

75°

75°

Partly Cloudy

1%

0% Thunder
( 1% severe)

SSW 6

79%

68°

11 PM

72°

72°

Partly Cloudy

SSW 5

87%

68°

Thursday
20 AUG 2026

2 AM

71°

71°

Partly Cloudy

4%

0% Thunder
( 1% severe)

SW 3

90%

68°

Low 68°

5 AM

69°

69°

Partly Cloudy

WNW 2

93%

67°

High 81°

8 AM

72°

72°

Partly Cloudy

2%

0% Thunder
( 3% severe)

NNW 3

81%

66°

Partly Cloudy

Chance of Rain

11 AM

80°

82°

Partly Cloudy

NW 6

65%

67°

2 PM

81°

84°

Partly Cloudy

45%
RAIN
***

0% Thunder
( 8% severe)

WSW 7

63%

67°

5 PM

79°

81°

Partly Cloudy

WSW 6

67%

67°

8 PM

73°

73°

Mostly Cloudy

16%
RAIN
<.01 in

0% Thunder
( 7% severe)

NW 3

79%

66°

11 PM

69°

69°

Mostly Cloudy

WNW 2

84%

64°


GROTON, CT extended weather forecast
Friday 21 AUG 2026	Saturday 22 AUG 2026	Sunday 23 AUG 2026	Monday 24 AUG 2026	Tuesday 25 AUG 2026
Low 59°	Low 65°	Low 64°	Low 63°	Low 61°
High 81°	High 75°	High 75°	High 77°	High 76°

Partly Cloudy 16% Rain	Overcast 55% Rain	Overcast 59% Rain	Partly Cloudy 28% Rain	Partly Cloudy 19% Rain

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