Hourly Weather Forecast - Port Jefferson, NY

6 AM
34°F
0%
11mph
SW
Partly Cloudy
Humidity
79%
Feels like
26°F
Dew Point
28°F
7 AM
35°F
0%
10mph
SW
Partly Cloudy
Humidity
80%
Feels like
28°F
Dew Point
30°F
7:05 AM
8 AM
37°F
0%
10mph
SW
Partly Cloudy
Humidity
81%
Feels like
29°F
Dew Point
31°F
9 AM
38°F
0%
11mph
SSW
Partly Cloudy
Humidity
76%
Feels like
31°F
Dew Point
32°F
10 AM
40°F
0%
13mph
SSW
Partly Cloudy
Humidity
75%
Feels like
33°F
Dew Point
33°F
11 AM
43°F
0%
15mph
SSW
Mostly Cloudy
Humidity
73%
Feels like
35°F
Dew Point
35°F
12 PM
44°F
0%
17mph
SSW
Mostly Cloudy
Humidity
73%
Feels like
37°F
Dew Point
36°F
1 PM
45°F
10%
18mph
SSW
Mostly Cloudy
Humidity
72%
Feels like
38°F
Dew Point
37°F
2 PM
46°F
10%
18mph
SSW
Cloudy
Humidity
74%
Feels like
38°F
Dew Point
38°F
3 PM
45°F
10%
18mph
SSW
Cloudy
Humidity
77%
Feels like
37°F
Dew Point
38°F
4 PM
44°F
30%
17mph
SSW
30% Chance of Light Rain
Humidity
79%
Feels like
36°F
Dew Point
38°F
4:24 PM
5 PM
43°F
30%
16mph
SSW
30% Chance of Light Rain
Humidity
81%
Feels like
35°F
Dew Point
38°F
6 PM
43°F
40%
15mph
SSW
40% Chance of Light Rain
Humidity
81%
Feels like
35°F
Dew Point
37°F
7 PM
42°F
60%
14mph
SW
60% Chance of Light Rain
Humidity
82%
Feels like
35°F
Dew Point
37°F
8 PM
42°F
70%
14mph
SW
70% Chance of Light Rain
Humidity
83%
Feels like
35°F
Dew Point
37°F
9 PM
41°F
60%
14mph
SW
60% Chance of Light Rain
Humidity
86%
Feels like
34°F
Dew Point
37°F
10 PM
41°F
30%
14mph
SW
30% Chance of Light Rain
Humidity
88%
Feels like
33°F
Dew Point
38°F
11 PM
41°F
30%
14mph
SW
30% Chance of Light Rain
Humidity
87%
Feels like
33°F
Dew Point
37°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

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

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide