Hourly Weather Forecast - Cos Cob, CT

8 PM
35°F
70%
3mph
WSW
70% Chance of Heavy Snow
Humidity
77%
Feels like
35°F
Dew Point
29°F
9 PM
35°F
30%
3mph
WSW
30% Chance of Snow
Humidity
81%
Feels like
35°F
Dew Point
30°F
10 PM
35°F
40%
3mph
WSW
40% Chance Frozen Mix
Humidity
86%
Feels like
35°F
Dew Point
31°F
11 PM
34°F
50%
2mph
WSW
50% Chance Frozen Mix
Humidity
88%
Feels like
34°F
Dew Point
31°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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