Hourly Weather Forecast - Port Jefferson, NY

12 PM
26°F
0%
3mph
SW
Sunny
Humidity
53%
Feels like
22°F
Dew Point
11°F
1 PM
27°F
0%
4mph
SSW
Mostly Sunny
Humidity
50%
Feels like
22°F
Dew Point
10°F
2 PM
27°F
0%
5mph
SSW
Partly Cloudy
Humidity
50%
Feels like
21°F
Dew Point
11°F
3 PM
28°F
0%
7mph
SSW
Mostly Cloudy
Humidity
55%
Feels like
20°F
Dew Point
14°F
4 PM
28°F
0%
8mph
SSW
Mostly Cloudy
Humidity
62%
Feels like
20°F
Dew Point
17°F
4:24 PM
5 PM
29°F
0%
9mph
SSW
Mostly Cloudy
Humidity
66%
Feels like
21°F
Dew Point
19°F
6 PM
30°F
0%
9mph
SSW
Mostly Cloudy
Humidity
67%
Feels like
22°F
Dew Point
20°F
7 PM
32°F
0%
10mph
SSW
Partly Cloudy
Humidity
65%
Feels like
23°F
Dew Point
21°F
8 PM
33°F
0%
12mph
SSW
Mostly Cloudy
Humidity
68%
Feels like
25°F
Dew Point
24°F
9 PM
35°F
10%
13mph
SW
Mostly Cloudy
Humidity
72%
Feels like
26°F
Dew Point
27°F
10 PM
36°F
0%
14mph
SW
Cloudy
Humidity
74%
Feels like
27°F
Dew Point
28°F
11 PM
37°F
0%
14mph
SW
Cloudy
Humidity
73%
Feels like
28°F
Dew Point
29°F

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

A fast-moving series of atmospheric rivers continue to drench the Pacific Northwest today through Thursday.

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Today's Weather Outlook

Today'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

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Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide