Hourly Weather Forecast - Old Greenwich, CT

12 AM
25°F
20%
5mph
WSW
Cloudy
Humidity
73%
Feels like
18°F
Dew Point
17°F
1 AM
25°F
10%
6mph
WSW
Cloudy
Humidity
73%
Feels like
18°F
Dew Point
17°F
2 AM
24°F
10%
6mph
W
Cloudy
Humidity
72%
Feels like
17°F
Dew Point
17°F
3 AM
24°F
10%
6mph
W
Cloudy
Humidity
72%
Feels like
16°F
Dew Point
16°F
4 AM
23°F
10%
6mph
W
Mostly Cloudy
Humidity
71%
Feels like
16°F
Dew Point
15°F
5 AM
23°F
0%
6mph
W
Mostly Cloudy
Humidity
71%
Feels like
15°F
Dew Point
15°F
6 AM
23°F
0%
6mph
W
Partly Cloudy
Humidity
70%
Feels like
15°F
Dew Point
14°F
7 AM
23°F
0%
6mph
W
Partly Cloudy
Humidity
68%
Feels like
16°F
Dew Point
14°F
7:12 AM
8 AM
25°F
0%
6mph
W
Mostly Cloudy
Humidity
66%
Feels like
18°F
Dew Point
15°F
9 AM
27°F
0%
6mph
W
Cloudy
Humidity
59%
Feels like
20°F
Dew Point
15°F
10 AM
29°F
0%
6mph
W
Cloudy
Humidity
58%
Feels like
22°F
Dew Point
16°F
11 AM
30°F
0%
7mph
W
Cloudy
Humidity
57%
Feels like
24°F
Dew Point
17°F
12 PM
31°F
0%
7mph
WNW
Mostly Cloudy
Humidity
59%
Feels like
24°F
Dew Point
19°F
1 PM
31°F
0%
7mph
WNW
Mostly Cloudy
Humidity
58%
Feels like
25°F
Dew Point
19°F
2 PM
32°F
0%
7mph
WNW
Mostly Cloudy
Humidity
57%
Feels like
25°F
Dew Point
18°F
3 PM
31°F
0%
6mph
WNW
Cloudy
Humidity
60%
Feels like
25°F
Dew Point
19°F
4 PM
30°F
0%
5mph
WNW
Cloudy
Humidity
63%
Feels like
25°F
Dew Point
19°F
4:26 PM
5 PM
29°F
0%
5mph
WNW
Cloudy
Humidity
66%
Feels like
24°F
Dew Point
19°F
6 PM
28°F
0%
4mph
WNW
Cloudy
Humidity
69%
Feels like
23°F
Dew Point
19°F
7 PM
28°F
0%
4mph
W
Cloudy
Humidity
72%
Feels like
23°F
Dew Point
20°F
8 PM
27°F
0%
3mph
W
Mostly Cloudy
Humidity
74%
Feels like
27°F
Dew Point
20°F
9 PM
26°F
0%
2mph
W
Mostly Cloudy
Humidity
76%
Feels like
26°F
Dew Point
20°F
10 PM
26°F
0%
2mph
WSW
Mostly Cloudy
Humidity
74%
Feels like
26°F
Dew Point
19°F
11 PM
26°F
0%
2mph
WSW
Partly Cloudy
Humidity
74%
Feels like
26°F
Dew Point
19°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