Hourly Weather Forecast - Groton, CT

12 AM
33°F
10%
3mph
WNW
Clear
Humidity
86%
Feels like
30°F
Dew Point
29°F
1 AM
32°F
10%
2mph
WNW
Clear
Humidity
87%
Feels like
32°F
Dew Point
28°F
2 AM
31°F
10%
2mph
WNW
Clear
Humidity
87%
Feels like
31°F
Dew Point
27°F
3 AM
29°F
0%
2mph
WNW
Mostly Clear
Humidity
88%
Feels like
29°F
Dew Point
26°F
4 AM
28°F
0%
1mph
W
Mostly Clear
Humidity
89%
Feels like
28°F
Dew Point
26°F
5 AM
27°F
0%
1mph
W
Mostly Clear
Humidity
90%
Feels like
27°F
Dew Point
25°F
6 AM
27°F
0%
1mph
WSW
Clear
Humidity
90%
Feels like
27°F
Dew Point
25°F
7 AM
28°F
0%
1mph
SSW
Clear
Humidity
88%
Feels like
28°F
Dew Point
25°F
7:09 AM
8 AM
31°F
0%
1mph
SSW
Mostly Sunny
Humidity
86%
Feels like
31°F
Dew Point
27°F
9 AM
34°F
0%
1mph
S
Mostly Sunny
Humidity
83%
Feels like
34°F
Dew Point
30°F
10 AM
38°F
0%
2mph
S
Mostly Sunny
Humidity
79%
Feels like
38°F
Dew Point
32°F
11 AM
41°F
0%
3mph
S
Mostly Sunny
Humidity
78%
Feels like
39°F
Dew Point
34°F
12 PM
43°F
0%
5mph
S
Partly Cloudy
Humidity
77%
Feels like
40°F
Dew Point
37°F
1 PM
45°F
0%
6mph
S
Partly Cloudy
Humidity
76%
Feels like
42°F
Dew Point
38°F
2 PM
46°F
0%
6mph
S
Partly Cloudy
Humidity
78%
Feels like
43°F
Dew Point
39°F
3 PM
46°F
0%
6mph
S
Partly Cloudy
Humidity
82%
Feels like
42°F
Dew Point
40°F
4 PM
45°F
0%
6mph
S
Partly Cloudy
Humidity
84%
Feels like
42°F
Dew Point
40°F
4:20 PM
5 PM
44°F
10%
6mph
SSE
Partly Cloudy
Humidity
86%
Feels like
41°F
Dew Point
41°F
6 PM
45°F
10%
7mph
SSE
Partly Cloudy
Humidity
86%
Feels like
41°F
Dew Point
41°F
7 PM
45°F
0%
7mph
SSE
Partly Cloudy
Humidity
85%
Feels like
41°F
Dew Point
41°F
8 PM
46°F
0%
8mph
S
Mostly Cloudy
Humidity
85%
Feels like
42°F
Dew Point
42°F
9 PM
47°F
10%
9mph
S
Mostly Cloudy
Humidity
88%
Feels like
43°F
Dew Point
44°F
10 PM
48°F
40%
9mph
S
40% Chance of Light Rain
Humidity
91%
Feels like
44°F
Dew Point
46°F
11 PM
50°F
70%
11mph
S
70% Chance of Light Rain
Humidity
93%
Feels like
45°F
Dew Point
48°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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