Hourly Weather Forecast - Groton, CT

12 AM
29°F
0%
13mph
W
Mostly Clear
Humidity
58%
Feels like
18°F
Dew Point
16°F
1 AM
28°F
0%
13mph
W
Clear
Humidity
55%
Feels like
17°F
Dew Point
14°F
2 AM
27°F
0%
12mph
WNW
Clear
Humidity
52%
Feels like
17°F
Dew Point
12°F
3 AM
27°F
0%
11mph
WNW
Clear
Humidity
52%
Feels like
17°F
Dew Point
12°F
4 AM
26°F
0%
11mph
WNW
Clear
Humidity
52%
Feels like
16°F
Dew Point
11°F
5 AM
26°F
0%
10mph
WNW
Clear
Humidity
50%
Feels like
16°F
Dew Point
10°F
6 AM
26°F
0%
9mph
WNW
Clear
Humidity
49%
Feels like
16°F
Dew Point
9°F
7 AM
26°F
0%
8mph
WNW
Clear
Humidity
47%
Feels like
17°F
Dew Point
9°F
7:10 AM
8 AM
26°F
0%
7mph
WNW
Sunny
Humidity
45%
Feels like
18°F
Dew Point
8°F
9 AM
28°F
0%
7mph
WNW
Sunny
Humidity
43%
Feels like
20°F
Dew Point
8°F
10 AM
29°F
0%
7mph
WNW
Sunny
Humidity
40%
Feels like
22°F
Dew Point
8°F
11 AM
30°F
0%
6mph
WNW
Partly Cloudy
Humidity
40%
Feels like
24°F
Dew Point
9°F
12 PM
31°F
10%
6mph
WNW
Mostly Cloudy
Humidity
41%
Feels like
26°F
Dew Point
10°F
1 PM
32°F
0%
6mph
W
Cloudy
Humidity
41%
Feels like
27°F
Dew Point
11°F
2 PM
32°F
0%
5mph
W
Cloudy
Humidity
44%
Feels like
27°F
Dew Point
13°F
3 PM
32°F
0%
4mph
WSW
Mostly Cloudy
Humidity
49%
Feels like
28°F
Dew Point
15°F
4 PM
32°F
0%
4mph
SW
Partly Cloudy
Humidity
54%
Feels like
28°F
Dew Point
18°F
4:21 PM
5 PM
32°F
0%
4mph
SW
Partly Cloudy
Humidity
58%
Feels like
28°F
Dew Point
19°F
6 PM
32°F
0%
5mph
SW
Mostly Cloudy
Humidity
62%
Feels like
27°F
Dew Point
20°F
7 PM
32°F
10%
6mph
SSW
Mostly Cloudy
Humidity
65%
Feels like
26°F
Dew Point
21°F
8 PM
32°F
10%
6mph
SSW
Mostly Cloudy
Humidity
68%
Feels like
26°F
Dew Point
23°F
9 PM
33°F
10%
7mph
SSW
Mostly Cloudy
Humidity
72%
Feels like
26°F
Dew Point
25°F
10 PM
34°F
10%
8mph
SW
Mostly Cloudy
Humidity
75%
Feels like
27°F
Dew Point
27°F
11 PM
35°F
10%
9mph
SW
Mostly Cloudy
Humidity
78%
Feels like
28°F
Dew Point
29°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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