Hourly Weather Forecast - Port Jefferson, NY

12 AM
30°F
20%
14mph
WNW
Partly Cloudy
Humidity
58%
Feels like
19°F
Dew Point
17°F
1 AM
28°F
20%
15mph
WNW
Partly Cloudy
Humidity
58%
Feels like
17°F
Dew Point
15°F
2 AM
27°F
20%
15mph
WNW
Mostly Clear
Humidity
57%
Feels like
15°F
Dew Point
14°F
3 AM
26°F
20%
14mph
WNW
Mostly Clear
Humidity
56%
Feels like
14°F
Dew Point
12°F
4 AM
25°F
20%
13mph
WNW
Clear
Humidity
55%
Feels like
13°F
Dew Point
11°F
5 AM
24°F
10%
12mph
WNW
Mostly Clear
Humidity
54%
Feels like
12°F
Dew Point
10°F
6 AM
23°F
10%
11mph
W
Mostly Clear
Humidity
55%
Feels like
11°F
Dew Point
9°F
7 AM
23°F
10%
11mph
W
Mostly Clear
Humidity
55%
Feels like
12°F
Dew Point
9°F
7:10 AM
8 AM
23°F
10%
10mph
W
Mostly Sunny
Humidity
55%
Feels like
13°F
Dew Point
10°F
9 AM
25°F
10%
10mph
W
Partly Cloudy
Humidity
51%
Feels like
15°F
Dew Point
9°F
10 AM
26°F
10%
10mph
W
Partly Cloudy
Humidity
49%
Feels like
16°F
Dew Point
9°F
11 AM
27°F
10%
10mph
W
Mostly Cloudy
Humidity
48%
Feels like
17°F
Dew Point
10°F
12 PM
28°F
10%
10mph
W
Mostly Cloudy
Humidity
47%
Feels like
18°F
Dew Point
10°F
1 PM
28°F
10%
9mph
W
Mostly Cloudy
Humidity
47%
Feels like
19°F
Dew Point
11°F
2 PM
28°F
10%
9mph
WSW
Mostly Cloudy
Humidity
48%
Feels like
20°F
Dew Point
11°F
3 PM
28°F
10%
9mph
WSW
Cloudy
Humidity
49%
Feels like
20°F
Dew Point
11°F
4 PM
28°F
10%
9mph
WSW
Cloudy
Humidity
51%
Feels like
20°F
Dew Point
12°F

Snow Forecast through Sunday

Unrelenting Storm Track Brings Snow to Great Lakes & Northeast

A couple low pressure systems will produce additional snowfall across the Great Lakes, Upper Midwest, and Northeast this weekend into the upcoming week.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for January 15, 2026

Active Weather Creates Mix of Improvements, Degradations to Drought Depiction

Vehicle driving in wintry conditions

Prepare Your Car for Cold Weather

(Image provided by NOAA)

Polar Vortex: What Is It?

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide