Hourly Weather Forecast - Old Lyme, CT

9 AM
41°F
0%
7mph
WSW
Sunny
Humidity
72%
Feels like
37°F
Dew Point
33°F
10 AM
42°F
0%
7mph
W
Sunny
Humidity
66%
Feels like
38°F
Dew Point
32°F
11 AM
43°F
0%
7mph
W
Sunny
Humidity
60%
Feels like
38°F
Dew Point
30°F
12 PM
42°F
0%
8mph
WNW
Mostly Sunny
Humidity
57%
Feels like
37°F
Dew Point
28°F
1 PM
41°F
0%
9mph
WNW
Partly Cloudy
Humidity
54%
Feels like
36°F
Dew Point
26°F
2 PM
40°F
0%
9mph
WNW
Partly Cloudy
Humidity
52%
Feels like
34°F
Dew Point
23°F
3 PM
38°F
0%
9mph
NW
Partly Cloudy
Humidity
50%
Feels like
32°F
Dew Point
21°F
4 PM
36°F
0%
8mph
NW
Mostly Sunny
Humidity
49%
Feels like
29°F
Dew Point
19°F
4:22 PM
5 PM
34°F
0%
8mph
NW
Clear
Humidity
49%
Feels like
28°F
Dew Point
17°F
6 PM
33°F
0%
7mph
WNW
Clear
Humidity
48%
Feels like
26°F
Dew Point
16°F
7 PM
32°F
0%
7mph
WNW
Mostly Clear
Humidity
48%
Feels like
25°F
Dew Point
15°F
8 PM
31°F
0%
7mph
WNW
Mostly Clear
Humidity
48%
Feels like
25°F
Dew Point
14°F
9 PM
31°F
0%
7mph
WNW
Partly Cloudy
Humidity
49%
Feels like
24°F
Dew Point
14°F
10 PM
30°F
0%
7mph
WNW
Partly Cloudy
Humidity
50%
Feels like
24°F
Dew Point
14°F
11 PM
29°F
0%
7mph
WNW
Partly Cloudy
Humidity
52%
Feels like
23°F
Dew Point
14°F

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

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

NOAA, NCDC

White Christmas? What Are The Odds

Today's Weather Outlook

Today'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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