Hourly Weather Forecast - Groton, CT

12 AM
22°F
0%
4mph
W
Mostly Cloudy
Humidity
76%
Feels like
16°F
Dew Point
16°F
1 AM
22°F
0%
4mph
W
Partly Cloudy
Humidity
77%
Feels like
16°F
Dew Point
16°F
2 AM
22°F
0%
4mph
W
Partly Cloudy
Humidity
77%
Feels like
16°F
Dew Point
16°F
3 AM
22°F
0%
5mph
W
Partly Cloudy
Humidity
78%
Feels like
15°F
Dew Point
16°F
4 AM
22°F
0%
5mph
W
Partly Cloudy
Humidity
79%
Feels like
15°F
Dew Point
16°F
5 AM
22°F
0%
4mph
W
Mostly Cloudy
Humidity
78%
Feels like
15°F
Dew Point
16°F
6 AM
22°F
0%
4mph
W
Mostly Cloudy
Humidity
77%
Feels like
16°F
Dew Point
16°F
7 AM
22°F
0%
3mph
W
Partly Cloudy
Humidity
74%
Feels like
18°F
Dew Point
15°F
7:07 AM
8 AM
24°F
0%
2mph
W
Sunny
Humidity
72%
Feels like
24°F
Dew Point
16°F
9 AM
26°F
0%
2mph
WNW
Sunny
Humidity
70%
Feels like
26°F
Dew Point
17°F
10 AM
28°F
0%
2mph
W
Sunny
Humidity
64%
Feels like
28°F
Dew Point
17°F
11 AM
29°F
0%
2mph
W
Sunny
Humidity
60%
Feels like
29°F
Dew Point
17°F
12 PM
31°F
0%
3mph
WSW
Sunny
Humidity
59%
Feels like
31°F
Dew Point
18°F
1 PM
31°F
0%
4mph
WSW
Sunny
Humidity
57%
Feels like
28°F
Dew Point
18°F
2 PM
31°F
0%
4mph
WSW
Sunny
Humidity
58%
Feels like
27°F
Dew Point
18°F
3 PM
30°F
0%
4mph
WSW
Sunny
Humidity
60%
Feels like
26°F
Dew Point
18°F
4 PM
29°F
0%
4mph
WSW
Sunny
Humidity
63%
Feels like
25°F
Dew Point
18°F
4:19 PM
5 PM
28°F
0%
4mph
WSW
Mostly Clear
Humidity
67%
Feels like
24°F
Dew Point
19°F
6 PM
28°F
0%
4mph
WSW
Mostly Clear
Humidity
67%
Feels like
24°F
Dew Point
19°F
7 PM
29°F
0%
4mph
WSW
Mostly Clear
Humidity
64%
Feels like
24°F
Dew Point
18°F
8 PM
29°F
0%
4mph
WSW
Partly Cloudy
Humidity
65%
Feels like
24°F
Dew Point
19°F
9 PM
29°F
0%
5mph
WSW
Mostly Cloudy
Humidity
67%
Feels like
23°F
Dew Point
19°F
10 PM
29°F
0%
6mph
SW
Cloudy
Humidity
71%
Feels like
22°F
Dew Point
20°F
11 PM
28°F
0%
6mph
WSW
Mostly Cloudy
Humidity
74%
Feels like
21°F
Dew Point
21°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday's Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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