GROTON, CT 06340 Weather Forecast & Current Conditions

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06340 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
GROTON, CT Current Weather
4:56 PM EDT MAY 12, 2026
Clear 59°F
Feels Like:	56°F
Dewpoint:	34°F
Rel. Hum.:	39%
Visibility:	10 miles
Wind:	SW at 14 mph, gusts to 26
Pressure:	30.06 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

THIS AFTERNOON
Sunny. Highs in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the evening.

WEDNESDAY
Mostly cloudy. Highs in the lower 60s. South winds 15 to 20 mph. Gusts up to 25 mph, increasing to 35 mph in the afternoon.

WEDNESDAY NIGHT
Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Patchy fog after midnight. Lows in the lower 50s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent.

THURSDAY
Showers with a slight chance of thunderstorms. Patchy fog. Highs in the lower 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain near 100 percent.

THURSDAY NIGHT
Showers, mainly in the evening. Lows in the upper 40s. Chance of rain 90 percent.

FRIDAY
Mostly cloudy. A chance of showers. Highs in the mid 60s. Chance of rain 50 percent.

FRIDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows around 50. Chance of rain 30 percent.

SATURDAY
Sunny. Highs in the lower 70s.

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

SUNDAY
Sunny. Highs around 80.

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

MONDAY
Mostly sunny. Highs in the mid 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 5/12/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
12 MAY 2026

2 PM

63°

62°

Clear

0%

0% Thunder
( 0% severe)

WSW 10

32%

33°

High 64°

5 PM

63°

62°

Clear

WSW 12

34%

34°

Clear

8 PM

55°

53°

Clear

0%

0% Thunder
( 0% severe)

SW 7

51%

37°

11 PM

51°

48°

Partly Cloudy

SW 8

63%

39°

Wednesday
13 MAY 2026

2 AM

50°

48°

Partly Cloudy

14%
RAIN
<.01 in

0% Thunder
( 0% severe)

SW 6

68%

40°

Low 46°

5 AM

49°

46°

Partly Cloudy

SSW 7

74%

41°

High 61°

8 AM

54°

51°

Mostly Cloudy

13%
RAIN
<.01 in

0% Thunder
( 0% severe)

SSW 9

66%

43°

Mostly Cloudy

11 AM

59°

56°

Mostly Cloudy

S 14

57%

44°

2 PM

61°

58°

Mostly Cloudy

9%

0% Thunder
( 0% severe)

S 17

56%

45°

5 PM

61°

58°

Mostly Cloudy

S 17

56%

45°

8 PM

57°

54°

Mostly Cloudy

18%
RAIN
<.01 in

0% Thunder
( 3% severe)

S 14

67%

46°

11 PM

56°

53°

Mostly Cloudy

S 12

74%

48°

Thursday
14 MAY 2026

2 AM

55°

52°

Mostly Cloudy

43%
RAIN
.5–1 in

0% Thunder
( 4% severe)

SSE 10

80%

49°

Low 50°

5 AM

54°

51°

Mostly Cloudy

SE 12

83%

49°

High 61°

8 AM

56°

53°

Mostly Cloudy

73%
RAIN
***

0% Thunder
( 8% severe)

ESE 10

80%

50°

Mostly Cloudy

Rain Likely

11 AM

61°

59°

Mostly Cloudy

ESE 12

72%

52°

2 PM

61°

60°

Mostly Cloudy

84%
RAIN
***

0% Thunder
( 19% severe)

SE 10

72%

52°

5 PM

60°

59°

Mostly Cloudy

ESE 8

75%

52°

8 PM

56°

56°

Mostly Cloudy

E 3

86%

52°


GROTON, CT extended weather forecast
Friday 15 MAY 2026	Saturday 16 MAY 2026	Sunday 17 MAY 2026	Monday 18 MAY 2026	Tuesday 19 MAY 2026
Low 49°	Low 48°	Low 54°	Low 52°	Low 55°
High 61°	High 67°	High 74°	High 67°	High 70°

Overcast 53% Rain	Partly Cloudy 18% Rain	Partly Cloudy 21% Rain	Partly Cloudy 17% Rain	Overcast 38% Rain

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