SUB BASE NEW LONDON, CT 06349 Weather Forecast & Current Conditions
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  06349 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

GROTON, CT
Current Weather
9:56 AM EDT MAY 13, 2026
Overcast
54°F
Feels Like: 52°F
Dewpoint: 46°F
Rel. Hum.: 74%
Visibility: 10 miles
Wind: S at 6 mph
Pressure: 30.05 inches
Last 72 hours

Local Area Snow Depth

Connecticut Current Weather

Connecticut MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  06349 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

SUB BASE NEW LONDON, CT 06349
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy. A slight chance of showers this morning. Highs in the mid 60s. South winds 15 to 20 mph. Gusts up to 25 mph, increasing to 35 mph this afternoon. Chance of rain 20 percent.
TONIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. South winds 10 to 15 mph. Gusts up to 30 mph, decreasing to 20 mph after midnight. Chance of rain 50 percent.
THURSDAY
Showers in the morning, then showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 90 percent.
THURSDAY NIGHT
Showers with a slight chance of thunderstorms in the evening, then showers after midnight. Lows in the upper 40s. East winds around 5 mph, becoming north after midnight. Chance of rain 80 percent.
FRIDAY
Showers. Highs in the lower 60s. North winds 5 to 10 mph. Chance of rain 80 percent.
FRIDAY NIGHT
Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the upper 40s. Chance of rain 40 percent.
SATURDAY
Sunny. Highs in the mid 70s.
SATURDAY NIGHT
Mostly clear. Lows in the mid 50s.
SUNDAY
Sunny. Highs in the lower 80s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
MONDAY
Mostly sunny. Highs in the lower 80s.
MONDAY NIGHT
Partly cloudy. Lows in the mid 50s.
TUESDAY
Mostly sunny. Highs in the lower 80s.

  06349 WEATHER SATELLITE LOOPS
Visible Weather Satellite
SUB BASE NEW LONDON, CT 06349
Infrared Weather Satellite
SUB BASE NEW LONDON, CT 06349
  06349 WEATHER RADAR LOOP
NEXRAD Weather Radar
SUB BASE NEW LONDON, CT 06349
 MOS COMPUTER WEATHER FORECAST

GROTON, CT 3 hourly weather forecast
weather forecast created  7:00 PM CDT  5/12/2026
Wednesday
13 MAY 2026		 SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 0 hours 2 AM 50° 47° Mostly Cloudy 19%
RAIN
<.01 in		 0% Thunder
( 1% severe)		 SW   7 68% 40°
Low 49° SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 3 hours 5 AM 50° 47° Mostly Cloudy SSW   7 71% 41°
High 63° SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 6 hours 8 AM 55° 52° Mostly Cloudy 15%
RAIN
<.01 in		 0% Thunder
( 0% severe)		 S   9 64% 43°

Mostly Cloudy



 SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 9 hours 11 AM 60° 57° Mostly Cloudy S   15 55% 44°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 12 hours 2 PM 62° 60° Mostly Cloudy 5%

 0% Thunder
( 0% severe)		 S   18 54% 45°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 15 hours 5 PM 62° 60° Mostly Cloudy S   18 54% 45°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 18 hours 8 PM 58° 55° Mostly Cloudy 7%

 0% Thunder
( 5% severe)		 S   14 67% 47°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 1, 21 hours 11 PM 56° 53° Mostly Cloudy S   12 77% 49°
Thursday
14 MAY 2026		 SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 0 hours 2 AM 55° 52° Mostly Cloudy 48%
RAIN
.25–.5 in		 0% Thunder
( 9% severe)		 SSE   10 83% 50°
Low 50° SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 3 hours 5 AM 54° 51° Mostly Cloudy SE   10 86% 50°
High 61° SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 6 hours 8 AM 57° 54° Mostly Cloudy 77%
RAIN
***		 0% Thunder
( 12% severe)		 SE   12 80% 51°

Mostly Cloudy

Rain Likely

 SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 9 hours 11 AM 61° 59° Mostly Cloudy ESE   12 75% 53°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 12 hours 2 PM 61° 60° Mostly Cloudy 75%
RAIN
***		 0% Thunder
( 16% severe)		 E   9 75% 53°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 15 hours 5 PM 60° 59° Mostly Cloudy E   7 78% 53°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 18 hours 8 PM 57° 57° Mostly Cloudy 56%
RAIN
1–2 in		 0% Thunder
( 8% severe)		 E   3 86% 53°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 2, 21 hours 11 PM 54° 54° Mostly Cloudy NE   3 90% 51°

GROTON, CT extended weather forecast
Friday
15 MAY 2026		 Saturday
16 MAY 2026		 Sunday
17 MAY 2026		 Monday
18 MAY 2026		 Tuesday
19 MAY 2026
Low 51° Low 47° Low 55° Low 56° Low 50°
High 61° High 68° High 71° High 66° High 66°
SUB BASE NEW LONDON, CT 06349 weather forecast Day 3 SUB BASE NEW LONDON, CT 06349 weather forecast Day 4 SUB BASE NEW LONDON, CT 06349 weather forecast Day 5 SUB BASE NEW LONDON, CT 06349 weather forecast Day 6 SUB BASE NEW LONDON, CT 06349 weather forecast Day 7
Overcast
59% Rain		 Partly Cloudy
13% Rain		 Partly Cloudy
29% Rain		 Partly Cloudy
24% Rain		 Mostly Cloudy
24% Rain
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