Hourly Weather Forecast - Groton, CT

12 AM
36°F
10%
10mph
SW
Mostly Cloudy
Humidity
79%
Feels like
29°F
Dew Point
30°F
1 AM
37°F
10%
10mph
SW
Cloudy
Humidity
79%
Feels like
29°F
Dew Point
31°F
2 AM
37°F
20%
10mph
SW
Mostly Cloudy
Humidity
79%
Feels like
30°F
Dew Point
31°F
3 AM
37°F
20%
10mph
SW
Mostly Cloudy
Humidity
80%
Feels like
30°F
Dew Point
32°F
4 AM
37°F
30%
9mph
SW
30% Chance Rain Showers
Humidity
82%
Feels like
31°F
Dew Point
32°F
5 AM
37°F
30%
9mph
SW
30% Chance Rain Showers
Humidity
82%
Feels like
30°F
Dew Point
32°F
6 AM
38°F
30%
9mph
SW
30% Chance of Light Rain
Humidity
82%
Feels like
31°F
Dew Point
32°F
7 AM
38°F
20%
9mph
SW
Cloudy
Humidity
82%
Feels like
31°F
Dew Point
33°F
7:10 AM
8 AM
39°F
30%
9mph
WSW
30% Chance of Light Rain
Humidity
77%
Feels like
33°F
Dew Point
32°F
9 AM
40°F
30%
9mph
WSW
30% Chance of Light Rain
Humidity
75%
Feels like
34°F
Dew Point
32°F
10 AM
41°F
30%
9mph
WSW
30% Chance of Light Rain
Humidity
69%
Feels like
35°F
Dew Point
32°F
11 AM
42°F
30%
9mph
WSW
30% Chance Rain Showers
Humidity
67%
Feels like
37°F
Dew Point
32°F
12 PM
43°F
20%
9mph
WSW
Partly Cloudy
Humidity
65%
Feels like
38°F
Dew Point
32°F
1 PM
43°F
20%
9mph
W
Partly Cloudy
Humidity
62%
Feels like
38°F
Dew Point
31°F
2 PM
43°F
10%
9mph
W
Partly Cloudy
Humidity
59%
Feels like
38°F
Dew Point
29°F
3 PM
42°F
10%
8mph
W
Mostly Sunny
Humidity
58%
Feels like
37°F
Dew Point
28°F
4 PM
40°F
10%
7mph
W
Mostly Sunny
Humidity
58%
Feels like
35°F
Dew Point
27°F
4:21 PM
5 PM
38°F
10%
7mph
W
Clear
Humidity
63%
Feels like
33°F
Dew Point
27°F
6 PM
38°F
10%
7mph
W
Clear
Humidity
64%
Feels like
32°F
Dew Point
27°F
7 PM
37°F
10%
7mph
W
Clear
Humidity
65%
Feels like
31°F
Dew Point
26°F
8 PM
36°F
10%
7mph
WNW
Clear
Humidity
65%
Feels like
30°F
Dew Point
25°F
9 PM
34°F
10%
7mph
WNW
Mostly Clear
Humidity
67%
Feels like
28°F
Dew Point
24°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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