Hourly Weather Forecast - Old Greenwich, CT

12 AM
21°F
10%
9mph
NW
Clear
Humidity
60%
Feels like
11°F
Dew Point
10°F
1 AM
21°F
0%
9mph
NW
Clear
Humidity
61%
Feels like
11°F
Dew Point
10°F
2 AM
21°F
0%
9mph
NW
Clear
Humidity
61%
Feels like
11°F
Dew Point
10°F
3 AM
21°F
0%
9mph
NW
Clear
Humidity
61%
Feels like
11°F
Dew Point
10°F
4 AM
20°F
0%
9mph
NW
Clear
Humidity
62%
Feels like
10°F
Dew Point
9°F
5 AM
19°F
0%
9mph
NW
Clear
Humidity
62%
Feels like
9°F
Dew Point
9°F
6 AM
19°F
0%
9mph
NW
Clear
Humidity
62%
Feels like
9°F
Dew Point
9°F
7 AM
20°F
0%
8mph
NW
Clear
Humidity
60%
Feels like
10°F
Dew Point
8°F
7:12 AM
8 AM
22°F
0%
8mph
NW
Sunny
Humidity
58%
Feels like
12°F
Dew Point
9°F
9 AM
24°F
0%
9mph
NW
Sunny
Humidity
52%
Feels like
14°F
Dew Point
9°F
10 AM
25°F
0%
9mph
NW
Sunny
Humidity
51%
Feels like
16°F
Dew Point
10°F
11 AM
27°F
0%
9mph
NW
Mostly Sunny
Humidity
50%
Feels like
18°F
Dew Point
11°F
12 PM
28°F
0%
9mph
NW
Mostly Sunny
Humidity
49%
Feels like
19°F
Dew Point
11°F
1 PM
29°F
0%
9mph
WNW
Partly Cloudy
Humidity
47%
Feels like
20°F
Dew Point
11°F
2 PM
29°F
0%
8mph
WNW
Partly Cloudy
Humidity
47%
Feels like
21°F
Dew Point
11°F
3 PM
28°F
0%
7mph
WNW
Partly Cloudy
Humidity
51%
Feels like
21°F
Dew Point
12°F
4 PM
27°F
0%
7mph
WNW
Mostly Cloudy
Humidity
53%
Feels like
20°F
Dew Point
12°F
4:26 PM
5 PM
26°F
0%
6mph
WNW
Mostly Cloudy
Humidity
55%
Feels like
20°F
Dew Point
13°F
6 PM
26°F
0%
5mph
WNW
Cloudy
Humidity
57%
Feels like
19°F
Dew Point
13°F
7 PM
25°F
0%
5mph
W
Cloudy
Humidity
60%
Feels like
19°F
Dew Point
13°F
8 PM
25°F
10%
4mph
W
Cloudy
Humidity
64%
Feels like
19°F
Dew Point
14°F
9 PM
25°F
10%
4mph
WSW
Mostly Cloudy
Humidity
69%
Feels like
19°F
Dew Point
16°F
10 PM
25°F
10%
4mph
WSW
Mostly Cloudy
Humidity
71%
Feels like
19°F
Dew Point
17°F
11 PM
25°F
10%
5mph
WSW
Mostly Cloudy
Humidity
72%
Feels like
19°F
Dew Point
17°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Thursday's Weather Outlook

Thursday's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide