GROTON, CT 06340 Weather Forecast & Current Conditions

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06340 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
GROTON, CT Current Weather
6:56 PM EDT MAY 19, 2026
Scattered Clouds Light Rain 70°F
Feels Like:	70°F
Dewpoint:	63°F
Rel. Hum.:	78%
Visibility:	10 miles
Wind:	SW at 6 mph
Pressure:	29.97 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. Near steady temperature in the upper 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

TONIGHT
Partly cloudy. Lows in the mid 60s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the evening.

WEDNESDAY
Partly sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

WEDNESDAY NIGHT
Mostly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the mid 50s. Northwest winds 5 to 10 mph. Chance of rain 50 percent.

THURSDAY
Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Cooler with highs in the upper 60s. North winds 5 to 10 mph, becoming southeast in the afternoon. Chance of rain 20 percent.

THURSDAY NIGHT
Partly cloudy. Lows in the upper 40s.

FRIDAY
Mostly sunny. Highs in the upper 60s.

FRIDAY NIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the upper 40s. Chance of rain 50 percent.

SATURDAY
Showers likely. Highs around 60. Chance of rain 70 percent.

SATURDAY NIGHT
Showers likely. Lows in the upper 40s. Chance of rain 70 percent.

SUNDAY
Mostly cloudy. Showers likely, mainly in the morning. Highs in the mid 60s. Chance of rain 70 percent.

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

MEMORIAL DAY
Mostly cloudy with a 50 percent chance of showers. Highs in the lower 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 5/19/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
19 MAY 2026

2 PM

82°

83°

Clear

5%

0% Thunder
( 19% severe)

SSW 14

51%

62°

High 83°

5 PM

78°

79°

Partly Cloudy

SSW 14

54%

60°

Partly Cloudy

8 PM

71°

71°

Partly Cloudy

3%

0% Thunder
( 8% severe)

SW 10

71%

61°

11 PM

67°

67°

Partly Cloudy

SW 9

75%

59°

Wednesday
20 MAY 2026

2 AM

67°

67°

Partly Cloudy

4%

0% Thunder
( 3% severe)

SW 8

75%

59°

Low 63°

5 AM

66°

66°

Partly Cloudy

SW 9

78%

59°

High 85°

8 AM

72°

72°

Partly Cloudy

5%

0% Thunder
( 3% severe)

WSW 9

64%

59°

Partly Cloudy

Rain Likely

11 AM

83°

83°

Clear

SW 13

47%

61°

2 PM

85°

85°

Partly Cloudy

60%
RAIN
***

0% Thunder
( 24% severe)

WSW 15

45%

61°

5 PM

79°

81°

Partly Cloudy

W 12

58%

63°

8 PM

71°

71°

Mostly Cloudy

21%
RAIN
.01–.1 in

0% Thunder
( 12% severe)

NW 7

76%

63°

11 PM

65°

65°

Mostly Cloudy

NW 8

63%

52°

Thursday
21 MAY 2026

2 AM

62°

61°

Mostly Cloudy

9%

0% Thunder
( 3% severe)

NNW 8

56%

46°

Low 55°

5 AM

58°

56°

Mostly Cloudy

NNW 8

64%

46°

High 68°

8 AM

61°

60°

Mostly Cloudy

4%

0% Thunder
( 0% severe)

N 9

53%

44°

Mostly Cloudy

11 AM

66°

66°

Mostly Cloudy

NNE 8

40%

41°

2 PM

68°

68°

Mostly Cloudy

2%

0% Thunder
( 0% severe)

SSE 6

37%

41°

5 PM

65°

65°

Mostly Cloudy

S 6

43%

42°

8 PM

58°

58°

Mostly Cloudy

S 3

60%

44°


GROTON, CT extended weather forecast
Friday 22 MAY 2026	Saturday 23 MAY 2026	Sunday 24 MAY 2026	Monday 25 MAY 2026	Tuesday 26 MAY 2026
Low 48°	Low 48°	Low 48°	Low 48°	Low 52°
High 65°	High 64°	High 62°	High 61°	High 67°

Partly Cloudy 8% Rain	Overcast 36% Rain	Overcast 28% Rain	Overcast 57% Rain	Overcast 49% Rain

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