GROTON, CT 06340 Weather Forecast & Current Conditions

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06340 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
GROTON, CT Current Weather
12:56 PM EDT MAY 13, 2026
Overcast 55°F
Feels Like:	52°F
Dewpoint:	46°F
Rel. Hum.:	72%
Visibility:	10 miles
Wind:	S at 10 mph
Pressure:	30.00 inches
Last 72 hours
Local Area Snow Depth
Connecticut Current Weather
Connecticut MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

06340 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	GROTON, CT 06340 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Mostly cloudy. A slight chance of showers this morning. Highs in the mid 60s. South winds 15 to 20 mph. Gusts up to 25 mph, increasing to 35 mph this afternoon. Chance of rain 20 percent.

TONIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. South winds 10 to 15 mph. Gusts up to 30 mph, decreasing to 20 mph after midnight. Chance of rain 50 percent.

THURSDAY
Showers in the morning, then showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Southeast winds 5 to 10 mph. Chance of rain 80 percent.

THURSDAY NIGHT
Showers likely with a slight chance of thunderstorms in the evening, then showers likely after midnight. Lows around 50. East winds around 5 mph, becoming north after midnight. Chance of rain 70 percent.

FRIDAY
Showers likely. Highs in the mid 60s. North winds around 5 mph. Chance of rain 70 percent.

FRIDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows around 50. Chance of rain 40 percent.

SATURDAY
Sunny. Highs in the mid 70s.

SATURDAY NIGHT
Mostly clear. Lows in the mid 50s.

SUNDAY
Sunny. Highs in the lower 80s.

SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.

MONDAY
Mostly sunny. Highs in the upper 70s.

MONDAY NIGHT
Partly cloudy. Lows in the mid 50s.

TUESDAY
Mostly 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 AM CDT 5/13/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
13 MAY 2026

2 PM

63°

61°

Mostly Cloudy

5%

0% Thunder
( 0% severe)

S 18

56%

47°

High 64°

5 PM

63°

61°

Mostly Cloudy

S 18

54%

46°

Mostly Cloudy

8 PM

58°

55°

Mostly Cloudy

6%

0% Thunder
( 5% severe)

S 14

67%

47°

11 PM

56°

53°

Mostly Cloudy

S 12

74%

48°

Thursday
14 MAY 2026

2 AM

55°

52°

Mostly Cloudy

40%
RAIN
.25–.5 in

0% Thunder
( 8% severe)

SSE 10

83%

50°

Low 51°

5 AM

54°

51°

Mostly Cloudy

SE 10

86%

50°

High 61°

8 AM

57°

55°

Mostly Cloudy

74%
RAIN
***

0% Thunder
( 10% severe)

SE 10

83%

52°

Mostly Cloudy

Rain Likely

11 AM

61°

59°

Mostly Cloudy

ESE 12

78%

54°

2 PM

60°

59°

Mostly Cloudy

76%
RAIN
***

0% Thunder
( 13% severe)

E 9

84%

55°

5 PM

60°

59°

Mostly Cloudy

E 7

84%

55°

8 PM

57°

58°

Mostly Cloudy

63%
RAIN
***

0% Thunder
( 5% severe)

E 1

90%

54°

11 PM

54°

54°

Mostly Cloudy

N 1

93%

52°

Friday
15 MAY 2026

2 AM

53°

53°

Mostly Cloudy

38%
RAIN
.01–.1 in

0% Thunder
( 3% severe)

CALM

93%

51°

Low 49°

5 AM

52°

52°

Mostly Cloudy

N 3

89%

49°

High 62°

8 AM

55°

54°

Mostly Cloudy

52%
RAIN
.01–.1 in

0% Thunder
( 4% severe)

N 6

83%

50°

Mostly Cloudy

Rain Likely

11 AM

61°

60°

Mostly Cloudy

N 8

72%

52°

2 PM

62°

61°

Mostly Cloudy

34%
RAIN
.01–.1 in

0% Thunder
( 3% severe)

N 8

70%

52°

5 PM

62°

62°

Mostly Cloudy

N 7

67%

51°

8 PM

57°

58°

Partly Cloudy

N 1

77%

50°


GROTON, CT extended weather forecast
Saturday 16 MAY 2026	Sunday 17 MAY 2026	Monday 18 MAY 2026	Tuesday 19 MAY 2026	Wednesday 20 MAY 2026
Low 47°	Low 55°	Low 56°	Low 50°	Low 56°
High 68°	High 71°	High 66°	High 66°	High 68°

Partly Cloudy 13% Rain	Partly Cloudy 29% Rain	Partly Cloudy 24% Rain	Mostly Cloudy 24% Rain	Overcast 43% Rain

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