Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Hazardous Weather Conditions

En Español

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Mostly Cloudy

77°F

25°C

Humidity	88%
Wind Speed	SW 5 mph
Barometer	30.00 in (1015.9 mb)
Dewpoint	73°F (23°C)
Visibility	9.00 mi
Heat Index	78°F (26°C)
Last update	18 Aug 9:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Extended Forecast for

South Lyme CT

Heat Advisory until August 19, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until August 19, 08:00pm

NOW until
8:00pm Mon

Heat Advisory
Tonight

Chance
T-storms
Low: 72 °F
Monday

Mostly Sunny
then Slight
Chance
T-storms
High: 88 °F
Monday
Night

Chance
T-storms
Low: 69 °F
Tuesday

Slight Chance
T-storms
High: 87 °F
Tuesday
Night

Chance
T-storms
Low: 69 °F
Wednesday

Chance
T-storms
High: 83 °F
Wednesday
Night

Chance
T-storms
Low: 71 °F
Thursday

Chance
Showers then
Chance
T-storms
High: 82 °F

Detailed Forecast

Tonight

A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Southwest wind around 6 mph.

Monday

A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 97. Southwest wind 5 to 8 mph.

Monday Night

A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 69. Southwest wind 5 to 7 mph becoming calm in the evening.

Tuesday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.

Tuesday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South wind around 6 mph becoming calm after midnight.

Wednesday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.

Wednesday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.

Thursday

A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 82. Chance of precipitation is 40%.

Thursday Night

Partly cloudy, with a low around 63.