Groton, Connecticut Weather
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Weather Forecast for Groton, Connecticut : New London County
Issued: 7:17 pm EDT Aug 26, 2025 Latitude: 41.3500984 Longitude: -72.0784092 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Labor Day Tuesday
Cloudy on Tonight Sunny on Wednesday Mostly Sunny on Thursday 60% chance of thunderstorms on Friday Mostly Sunny on Saturday Sunny on Sunday Mostly Sunny on Labor Day Mostly Sunny on Tuesday
Low: 57°F High: 73°F High: 70°F High: 70°F High: 68°F High: 70°F High: 70°F High: 71°F
Low: 56°F Low: 65°F Low: 58°F Low: 57°F Low: 59°F Low: 59°F  
Cloudy Sunny Mostly Sunny Thunderstorms Mostly Sunny Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
GROTON - (KGON)
66°
Clear
as of 7:56 PM EDST
Rel. Humidity: 72%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
6 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
WESTERLY STATE ARPT - (KWST)
70°
Clear
as of 7:53 PM EDST
Rel. Humidity: 64%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MONTAUK - (KMTP)
72°
Clear
as of 7:54 PM EDST
Rel. Humidity: 64%
Dew Point: 59°F
Pressure: 30.00 in.
Wind Data
7 MPH
230° Southwest
Current Conditions at
WILLIMANTIC - (KIJD)
66°
Clear
as of 7:52 PM EDST
Rel. Humidity: 63%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 57. Southwest wind around 6 mph becoming north after midnight.
Sunny on Wednesday Wednesday... Sunny, with a high near 73. North wind 6 to 9 mph becoming southwest in the afternoon.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 56. Northwest wind around 6 mph.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 70. Light and variable wind becoming south 5 to 10 mph in the morning.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 65. South wind around 10 mph.
60% chance of thunderstorms Friday Friday... A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
60% chance of thunderstorms Friday Night Friday Night... Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 68.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 57.
Sunny on Sunday Sunday... Sunny, with a high near 70.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 59.
Mostly Sunny on Labor Day Labor Day... Mostly sunny, with a high near 70.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 59.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 71.
Current Radar Image


Sun Almanac for Groton, Connecticut
Sunrise: 06:09 AM
Sunset: 7:31 PM
Civil Sunrise:05:40 AM
Civil Sunset: 8:00 PM
Nautical Sunrise: 05:06 AM
Nautical Sunset: 8:34 PM
Astro Sunrise: 04:29 AM
Astro Sunset: 9:11 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.