Hourly Weather Forecast - Groton, CT

12 AM
28°F
0%
7mph
WSW
Partly Cloudy
Humidity
76%
Feels like
21°F
Dew Point
21°F
1 AM
28°F
0%
7mph
SW
Mostly Clear
Humidity
77%
Feels like
21°F
Dew Point
22°F
2 AM
28°F
0%
7mph
SW
Mostly Clear
Humidity
76%
Feels like
21°F
Dew Point
22°F
3 AM
29°F
0%
8mph
SW
Mostly Clear
Humidity
74%
Feels like
21°F
Dew Point
22°F
4 AM
30°F
0%
8mph
SW
Mostly Clear
Humidity
74%
Feels like
22°F
Dew Point
22°F
5 AM
30°F
0%
8mph
SW
Mostly Clear
Humidity
75%
Feels like
23°F
Dew Point
23°F
6 AM
31°F
0%
8mph
SW
Mostly Clear
Humidity
76%
Feels like
24°F
Dew Point
25°F
7 AM
33°F
0%
8mph
SW
Mostly Clear
Humidity
74%
Feels like
27°F
Dew Point
26°F
7:08 AM
8 AM
36°F
0%
8mph
SW
Partly Cloudy
Humidity
72%
Feels like
29°F
Dew Point
28°F
9 AM
38°F
10%
9mph
SW
Mostly Cloudy
Humidity
75%
Feels like
32°F
Dew Point
31°F
10 AM
40°F
10%
9mph
SW
Cloudy
Humidity
71%
Feels like
34°F
Dew Point
31°F
11 AM
41°F
10%
10mph
SW
Cloudy
Humidity
73%
Feels like
35°F
Dew Point
33°F
12 PM
41°F
10%
10mph
SW
Mostly Cloudy
Humidity
75%
Feels like
34°F
Dew Point
33°F
1 PM
41°F
10%
10mph
WSW
Cloudy
Humidity
76%
Feels like
34°F
Dew Point
34°F
2 PM
41°F
10%
10mph
WSW
Mostly Cloudy
Humidity
77%
Feels like
34°F
Dew Point
34°F
3 PM
40°F
10%
10mph
WSW
Partly Cloudy
Humidity
78%
Feels like
34°F
Dew Point
34°F
4 PM
39°F
10%
9mph
WSW
Partly Cloudy
Humidity
77%
Feels like
33°F
Dew Point
33°F
4:20 PM
5 PM
39°F
10%
8mph
WSW
Partly Cloudy
Humidity
78%
Feels like
33°F
Dew Point
33°F
6 PM
38°F
10%
8mph
WSW
Partly Cloudy
Humidity
79%
Feels like
32°F
Dew Point
32°F
7 PM
37°F
10%
7mph
W
Partly Cloudy
Humidity
77%
Feels like
32°F
Dew Point
31°F
8 PM
37°F
10%
7mph
W
Partly Cloudy
Humidity
77%
Feels like
31°F
Dew Point
30°F
9 PM
36°F
10%
6mph
W
Mostly Clear
Humidity
78%
Feels like
31°F
Dew Point
30°F
10 PM
35°F
10%
6mph
W
Clear
Humidity
81%
Feels like
30°F
Dew Point
30°F
11 PM
34°F
10%
4mph
WNW
Clear
Humidity
84%
Feels like
30°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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