Hourly Weather Forecast - Cos Cob, CT

12 AM
24°F
10%
6mph
WSW
Mostly Cloudy
Humidity
75%
Feels like
17°F
Dew Point
18°F
1 AM
24°F
0%
6mph
WSW
Cloudy
Humidity
76%
Feels like
17°F
Dew Point
17°F
2 AM
23°F
0%
5mph
W
Cloudy
Humidity
76%
Feels like
17°F
Dew Point
17°F
3 AM
22°F
0%
4mph
W
Cloudy
Humidity
75%
Feels like
16°F
Dew Point
16°F
4 AM
22°F
0%
4mph
W
Cloudy
Humidity
76%
Feels like
16°F
Dew Point
15°F
5 AM
21°F
0%
4mph
W
Partly Cloudy
Humidity
75%
Feels like
16°F
Dew Point
15°F
6 AM
21°F
0%
4mph
W
Mostly Clear
Humidity
76%
Feels like
16°F
Dew Point
15°F
7 AM
22°F
0%
3mph
WNW
Clear
Humidity
75%
Feels like
17°F
Dew Point
15°F
7:12 AM
8 AM
23°F
0%
3mph
WNW
Sunny
Humidity
72%
Feels like
19°F
Dew Point
15°F
9 AM
25°F
0%
3mph
WNW
Sunny
Humidity
67%
Feels like
21°F
Dew Point
16°F
10 AM
28°F
0%
3mph
WNW
Sunny
Humidity
64%
Feels like
28°F
Dew Point
17°F
11 AM
29°F
0%
2mph
WNW
Sunny
Humidity
61%
Feels like
29°F
Dew Point
18°F
12 PM
31°F
0%
2mph
W
Sunny
Humidity
58%
Feels like
31°F
Dew Point
18°F
1 PM
32°F
0%
2mph
W
Sunny
Humidity
57%
Feels like
32°F
Dew Point
19°F
2 PM
32°F
0%
2mph
WSW
Sunny
Humidity
58%
Feels like
32°F
Dew Point
19°F
3 PM
31°F
0%
3mph
WSW
Mostly Sunny
Humidity
61%
Feels like
31°F
Dew Point
19°F
4 PM
30°F
0%
3mph
SW
Mostly Sunny
Humidity
65%
Feels like
30°F
Dew Point
20°F
4:27 PM
5 PM
29°F
0%
3mph
SW
Mostly Clear
Humidity
68%
Feels like
26°F
Dew Point
20°F
6 PM
28°F
0%
4mph
SW
Mostly Clear
Humidity
70%
Feels like
24°F
Dew Point
20°F
7 PM
28°F
0%
4mph
SW
Clear
Humidity
72%
Feels like
24°F
Dew Point
20°F
8 PM
27°F
0%
4mph
SW
Clear
Humidity
75%
Feels like
23°F
Dew Point
20°F
9 PM
27°F
0%
4mph
SW
Clear
Humidity
77%
Feels like
22°F
Dew Point
21°F
10 PM
27°F
0%
4mph
SW
Mostly Clear
Humidity
79%
Feels like
22°F
Dew Point
21°F
11 PM
26°F
0%
4mph
SW
Mostly Clear
Humidity
79%
Feels like
21°F
Dew Point
20°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

In the path of a weak low-pressure system that brings snow to the Midwest and Northeast, extreme cold weather and brutally cold wind chill values will bring a bitter cold to much of the Nation.

Snowfall forecast through Sunday evening.

Snow Spreads Across the Ohio Valley into the Mid-Atlantic

Weekend Weather Outlook

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

Cold Air Damming - Cause And Effects

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