GROTON, CT 06340 Weather Forecast & Current Conditions

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06340 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
GROTON, CT Current Weather
10:56 PM EDT JUN 30, 2026
Broken Clouds 72°F
Feels Like:	72°F
Dewpoint:	63°F
Rel. Hum.:	73%
Visibility:	10 miles
Wind:	SW at 7 mph
Pressure:	30.03 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

TONIGHT
Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.

WEDNESDAY
Sunny. A slight chance of showers in the morning. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. Heat index values in the mid 90s in the afternoon.

WEDNESDAY NIGHT
Partly cloudy in the evening, then clearing. Humid with lows in the upper 60s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening.

THURSDAY
Sunny with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 110.

THURSDAY NIGHT
Mostly clear. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the evening.

FRIDAY
Sunny, hot with highs in the upper 90s. Heat index values up to 110.

FRIDAY NIGHT
Mostly clear. Lows in the lower 70s.

INDEPENDENCE DAY
Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40 percent. Heat index values up to 100.

SATURDAY NIGHT
Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows around 70. Chance of rain 40 percent.

SUNDAY
Partly sunny. Highs in the upper 80s.

SUNDAY NIGHT
Mostly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent.

MONDAY
Partly sunny. A chance of showers. Highs in the lower 80s. Chance of rain 50 percent.

MONDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then partly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 40 percent.

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 6/30/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
30 JUN 2026

2 PM

83°

86°

Partly Cloudy

5%

0% Thunder
( 12% severe)

S 10

59%

67°

High 84°

5 PM

82°

84°

Partly Cloudy

SSW 12

56%

65°

Partly Cloudy

8 PM

74°

74°

Partly Cloudy

13%
RAIN
<.01 in

0% Thunder
( 11% severe)

SSW 9

69%

63°

11 PM

71°

71°

Mostly Cloudy

SSW 8

71%

61°

Wednesday
1 JUL 2026

2 AM

70°

70°

Partly Cloudy

24%
RAIN
.01–.1 in

0% Thunder
( 8% severe)

SW 9

76%

62°

Low 66°

5 AM

69°

69°

Partly Cloudy

SW 12

81%

63°

High 86°

8 AM

75°

75°

Partly Cloudy

2%

0% Thunder
( 4% severe)

SW 12

69%

64°

Partly Cloudy

11 AM

83°

85°

Partly Cloudy

SW 14

57%

66°

2 PM

86°

90°

Clear

5%

0% Thunder
( 11% severe)

SW 15

57%

69°

5 PM

85°

89°

Partly Cloudy

SW 15

59%

69°

8 PM

77°

79°

Partly Cloudy

4%

0% Thunder
( 21% severe)

SW 12

71%

67°

11 PM

74°

74°

Partly Cloudy

SW 10

76%

66°

Thursday
2 JUL 2026

2 AM

73°

73°

Partly Cloudy

2%

0% Thunder
( 19% severe)

SW 9

81%

67°

Low 68°

5 AM

71°

71°

Clear

SW 9

90%

68°

High 92°

8 AM

79°

82°

Clear

0%

0% Thunder
( 6% severe)

WSW 9

74%

70°

Clear

11 AM

88°

95°

Clear

SW 12

59%

72°

2 PM

92°

101°

Clear

1%

0% Thunder
( 13% severe)

SW 13

54%

73°

5 PM

91°

99°

Clear

SW 13

54%

72°

8 PM

82°

86°

Clear

SW 10

69%

71°


GROTON, CT extended weather forecast
Friday 3 JUL 2026	Saturday 4 JUL 2026	Sunday 5 JUL 2026	Monday 6 JUL 2026	Tuesday 7 JUL 2026
Low 72°	Low 72°	Low 70°	Low 65°	Low 65°
High 91°	High 87°	High 80°	High 82°	High 83°

Clear 7% Rain	Partly Cloudy 34% Rain	Partly Cloudy 51% Rain	Partly Cloudy 23% Rain	Partly Cloudy 25% Rain

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