Hourly Weather Forecast - Cos Cob, CT

12 AM
37°F
0%
6mph
SW
Mostly Cloudy
Humidity
64%
Feels like
32°F
Dew Point
26°F
1 AM
36°F
0%
6mph
SW
Cloudy
Humidity
66%
Feels like
31°F
Dew Point
26°F
2 AM
36°F
0%
6mph
SW
Cloudy
Humidity
67%
Feels like
31°F
Dew Point
26°F
3 AM
36°F
0%
6mph
SW
Cloudy
Humidity
71%
Feels like
31°F
Dew Point
28°F
4 AM
37°F
0%
6mph
SW
Cloudy
Humidity
74%
Feels like
32°F
Dew Point
29°F
5 AM
36°F
0%
6mph
SW
Mostly Cloudy
Humidity
76%
Feels like
32°F
Dew Point
29°F
6 AM
36°F
0%
6mph
WSW
Partly Cloudy
Humidity
77%
Feels like
31°F
Dew Point
30°F
7 AM
36°F
0%
6mph
WSW
Mostly Clear
Humidity
78%
Feels like
32°F
Dew Point
30°F
7:15 AM
8 AM
38°F
0%
6mph
WSW
Mostly Sunny
Humidity
74%
Feels like
33°F
Dew Point
30°F
9 AM
39°F
0%
6mph
W
Mostly Sunny
Humidity
70%
Feels like
35°F
Dew Point
30°F
10 AM
41°F
0%
6mph
W
Partly Cloudy
Humidity
67%
Feels like
36°F
Dew Point
31°F
11 AM
42°F
0%
7mph
WNW
Partly Cloudy
Humidity
61%
Feels like
37°F
Dew Point
29°F
12 PM
42°F
0%
8mph
WNW
Partly Cloudy
Humidity
57%
Feels like
37°F
Dew Point
28°F
1 PM
42°F
0%
9mph
WNW
Partly Cloudy
Humidity
51%
Feels like
36°F
Dew Point
25°F
2 PM
40°F
0%
10mph
WNW
Mostly Sunny
Humidity
48%
Feels like
34°F
Dew Point
22°F
3 PM
38°F
0%
10mph
WNW
Mostly Sunny
Humidity
48%
Feels like
31°F
Dew Point
20°F
4 PM
35°F
0%
9mph
WNW
Mostly Sunny
Humidity
47%
Feels like
28°F
Dew Point
17°F
4:29 PM
5 PM
33°F
0%
9mph
WNW
Mostly Clear
Humidity
46%
Feels like
26°F
Dew Point
15°F
6 PM
32°F
0%
8mph
WNW
Clear
Humidity
45%
Feels like
25°F
Dew Point
13°F
7 PM
31°F
0%
7mph
WNW
Clear
Humidity
45%
Feels like
24°F
Dew Point
13°F
8 PM
31°F
0%
7mph
WNW
Clear
Humidity
46%
Feels like
24°F
Dew Point
12°F
9 PM
30°F
0%
7mph
WNW
Clear
Humidity
48%
Feels like
23°F
Dew Point
13°F
10 PM
30°F
0%
7mph
WNW
Clear
Humidity
50%
Feels like
23°F
Dew Point
13°F
11 PM
29°F
0%
7mph
WNW
Clear
Humidity
52%
Feels like
22°F
Dew Point
13°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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