Hourly Weather Forecast - Port Jefferson, NY

12 AM
27°F
0%
7mph
SW
Mostly Clear
Humidity
75%
Feels like
19°F
Dew Point
20°F
1 AM
27°F
0%
7mph
SW
Mostly Clear
Humidity
74%
Feels like
20°F
Dew Point
20°F
2 AM
28°F
0%
8mph
SW
Clear
Humidity
74%
Feels like
20°F
Dew Point
20°F
3 AM
28°F
0%
8mph
SW
Clear
Humidity
74%
Feels like
20°F
Dew Point
21°F
4 AM
28°F
0%
8mph
SW
Clear
Humidity
74%
Feels like
20°F
Dew Point
21°F
5 AM
29°F
0%
8mph
SW
Mostly Clear
Humidity
74%
Feels like
21°F
Dew Point
21°F
6 AM
29°F
0%
9mph
SW
Partly Cloudy
Humidity
75%
Feels like
21°F
Dew Point
22°F
7 AM
31°F
0%
9mph
SW
Cloudy
Humidity
74%
Feels like
23°F
Dew Point
23°F
7:11 AM
8 AM
33°F
0%
9mph
SW
Mostly Cloudy
Humidity
72%
Feels like
25°F
Dew Point
24°F
9 AM
35°F
0%
10mph
SW
Partly Cloudy
Humidity
68%
Feels like
27°F
Dew Point
25°F
10 AM
37°F
0%
11mph
SW
Partly Cloudy
Humidity
66%
Feels like
29°F
Dew Point
26°F
11 AM
38°F
0%
12mph
SW
Partly Cloudy
Humidity
63%
Feels like
31°F
Dew Point
27°F
12 PM
40°F
0%
13mph
SW
Mostly Cloudy
Humidity
62%
Feels like
32°F
Dew Point
28°F
1 PM
40°F
0%
13mph
SW
Cloudy
Humidity
62%
Feels like
33°F
Dew Point
29°F
2 PM
40°F
0%
14mph
SW
Mostly Cloudy
Humidity
63%
Feels like
33°F
Dew Point
29°F
3 PM
40°F
0%
13mph
SW
Partly Cloudy
Humidity
67%
Feels like
32°F
Dew Point
30°F
4 PM
39°F
0%
12mph
WSW
Partly Cloudy
Humidity
70%
Feels like
31°F
Dew Point
30°F
4:25 PM
5 PM
38°F
0%
12mph
WSW
Partly Cloudy
Humidity
74%
Feels like
30°F
Dew Point
30°F
6 PM
37°F
0%
11mph
WSW
Mostly Clear
Humidity
77%
Feels like
29°F
Dew Point
30°F
7 PM
36°F
0%
11mph
WSW
Mostly Clear
Humidity
78%
Feels like
28°F
Dew Point
30°F
8 PM
36°F
0%
10mph
WSW
Mostly Clear
Humidity
80%
Feels like
28°F
Dew Point
30°F
9 PM
36°F
0%
9mph
W
Clear
Humidity
81%
Feels like
29°F
Dew Point
31°F
10 PM
35°F
0%
8mph
W
Clear
Humidity
82%
Feels like
29°F
Dew Point
31°F
11 PM
35°F
0%
7mph
W
Clear
Humidity
82%
Feels like
29°F
Dew Point
30°F

Snowfall forecast through Sunday A.M.

Winter's Snowy Wrath Blankets Northern Tier

The parade of snow will continue across the northern U.S. and Midwest into the weekend.

Weekend Weather Outlook

Weekend Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

Story Image via pixabay.com

Winter Precipitation

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide