Groton, Connecticut Weather
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Weather Forecast for Groton, Connecticut : New London County
Issued: 2:18 pm EDT Jul 1, 2025 Latitude: 41.3500984 Longitude: -72.0784092 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday Thursday Independence Day Saturday Sunday Monday
30% chance of thunderstorms on This Afternoon 80% chance of thunderstorms on Tonight 80% chance of thunderstorms on Wednesday Morning Fog on Thursday Sunny on Independence Day Mostly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday
High: 75°F Low: 69°F High: 78°F High: 75°F High: 74°F High: 77°F High: 78°F
Low: 66°F Low: 64°F Low: 62°F Low: 66°F Low: 69°F  
Thunderstorms Thunderstorms Thunderstorms Morning Fog Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
WESTERLY STATE ARPT - (KWST)
81°
Partly Cloudy
as of 2:04 PM EDST
Rel. Humidity: 78%
Dew Point: 73°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
10 MPH
200° South
Cloud Level(s): Scattered at 900ft
Current Conditions at
MONTAUK - (KMTP)
82°
Partly Cloudy
as of 1:54 PM EDST
Rel. Humidity: 74%
Dew Point: 73°F
Pressure: 29.84 in.
Wind Data
7 MPH
230° Southwest
Current Conditions at
WILLIMANTIC - (KIJD)
88°
Feels like 93°F
Partly Cloudy
as of 1:52 PM EDST
Rel. Humidity: 58%
Dew Point: 72°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
12 MPH
200° South
Cloud Level(s): Few at 2800ft, Scattered at 3500ft, Scattered at 4100ft
30% chance of thunderstorms This Afternoon This Afternoon... A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a steady temperature around 75. Southwest wind around 13 mph.
80% chance of thunderstorms Tonight Tonight... A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 5am, then showers after 5am. Patchy fog after 5am. Low around 69. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
80% chance of thunderstorms Wednesday Wednesday... Showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Patchy fog before 11am. Steady temperature around 71. West wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Patchy Fog on Wednesday Night Wednesday Night... Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 66. Southwest wind around 6 mph becoming calm after midnight.
Morning Fog on Thursday Thursday... Patchy fog before 9am. Otherwise, sunny, with a high near 78. Light west wind becoming southwest 5 to 9 mph in the morning.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 64.
Sunny on Independence Day Independence Day... Sunny, with a high near 75.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 62.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 74.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 66.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 77.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 69.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 78.
Current Radar Image


Sun Almanac for Groton, Connecticut
Sunrise: 05:19 AM
Sunset: 8:26 PM
Civil Sunrise:04:45 AM
Civil Sunset: 8:59 PM
Nautical Sunrise: 04:02 AM
Nautical Sunset: 9:42 PM
Astro Sunrise: 03:11 AM
Astro Sunset: 10:33 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.