New York, NY 22° Los Angeles, CA 19° 🌤️ Chicago, IL 🌤️ Houston, TX Miami, FL 25° 🌤️ Phoenix, AZ 🌤️ Seattle, WA 🌤️ Denver, CO 🌤️ Toronto, ON 🌤️ Vancouver, BC
WeatherLiveConnecticutGroton

Groton, CT Weather

Current WeatherGroton · 7:31 AM EDT
25° | -5°
20°C
Feels like 20°
Rain
WindE 5 mph · Gusts 14 mph
Precip93% · 2.87 in
Humidity85% · Dew point 17°
UV index2 Low
Air Quality42 Good
Pressure30.39 inHg
Visibility1 mi
Sunrise / Sunset5:59 AM · 7:45 PM · 13h 46m

Weather map — Groton

Full radar →
Now
20°
0.23 in
5 mph
08:00
20°
0.23 in
5 mph
09:00
22°
0.23 in
4 mph
10:00
22°
0.23 in
4 mph
11:00
23°
0.23 in
4 mph
12:00
24°
0.23 in
4 mph
13:00
23°
0.23 in
4 mph
14:00
24°
0.23 in
3 mph
15:00
25°
0.23 in
3 mph
16:00
43%
3 mph
17:00
44%
3 mph
18:00
43%
4 mph
19:00
-3°
31%
3 mph
20:00
-4°
26%
4 mph
21:00
-5°
23%
4 mph
22:00
-5°
20%
4 mph
23:00
-5°
22%
4 mph
00:00
-6°
20%
4 mph
01:00
-6°
15%
4 mph
02:00
-5°
15%
4 mph
03:00
-5°
30%
4 mph
04:00
-5°
15%
4 mph
05:00
-5°
19%
4 mph
06:00
-5°
16%
3 mph

Today · Mon 8/17

High 25°
93% / 2.87 in

Rain. Winds E at 5 mph.

Overnight · Mon 8/17

Low 20°
— / –

Rain.

Tomorrow · Tue 8/18

| -6°
24% / –

Sunny. Winds E at 4 mph.

7-day trend

Groton · temperature + precipitation

10-day forecast

Updated 7:31 AM

Details & indices

Wind
5 mph E
Gusts 14 mph
Humidity
85%
Dew point 17°
Pressure
30.39 inHg
Rising
UV index
2 — Low
High today
Air Quality
Good
AQI 42 · US EPA
Allergy
None detected
Visibility
1 mi
Reduced
Allergy — Groton

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
None

Sun & moon

Sunrise5:59 AM
Sunset7:45 PM
Length of day13h 46m
Moonrise11:29 AM
Moonset9:53 PM
Next full moonAug 28 Sturgeon Moon
Latitude41.3501°N
Longitude-72.0784°E

Water temps nearby

View all →
Misquamicut (16 mi)71°
Montauk (22 mi)75°
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
🌤️
Bridgeport
Data sources · Monday, August 17
Where the Groton forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 41.3501°N, -72.0784°.
NBM + global weather models
Updated: 7:31 AM
Weather in Groton
Over the next 10 days Groton tops out around 25° (Monday) and dips to -6° on the coolest night (Tuesday). Roughly 5.6 in of rain falls over the period, with Thursday the most likely wet day (95%). No active NWS alerts at the moment — quiet on the hazards front. Right now Groton is running about 49° warmer than Worcester. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Groton, CT · Elev 79 ft · 41.35°N, 72.08°W · Connecticut · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 7:31 AM