Hourly Weather Forecast - Port Jefferson, NY

12 AM
21°F
0%
12mph
WNW
Mostly Clear
Humidity
59%
Feels like
9°F
Dew Point
9°F
1 AM
20°F
0%
13mph
WNW
Clear
Humidity
60%
Feels like
8°F
Dew Point
9°F
2 AM
20°F
0%
13mph
WNW
Clear
Humidity
61%
Feels like
8°F
Dew Point
9°F
3 AM
20°F
0%
13mph
W
Mostly Clear
Humidity
62%
Feels like
8°F
Dew Point
9°F
4 AM
20°F
0%
12mph
W
Mostly Clear
Humidity
62%
Feels like
7°F
Dew Point
9°F
5 AM
20°F
0%
12mph
W
Mostly Clear
Humidity
62%
Feels like
7°F
Dew Point
9°F
6 AM
19°F
0%
12mph
W
Clear
Humidity
64%
Feels like
7°F
Dew Point
9°F
7 AM
19°F
10%
12mph
W
Clear
Humidity
65%
Feels like
7°F
Dew Point
9°F
7:17 AM
8 AM
20°F
10%
12mph
W
Sunny
Humidity
64%
Feels like
8°F
Dew Point
10°F
9 AM
22°F
10%
12mph
W
Sunny
Humidity
58%
Feels like
10°F
Dew Point
9°F
10 AM
24°F
10%
13mph
W
Sunny
Humidity
55%
Feels like
12°F
Dew Point
10°F
11 AM
25°F
10%
13mph
W
Sunny
Humidity
53%
Feels like
14°F
Dew Point
10°F
12 PM
26°F
10%
13mph
W
Mostly Sunny
Humidity
53%
Feels like
15°F
Dew Point
11°F
1 PM
27°F
10%
13mph
W
Mostly Sunny
Humidity
52%
Feels like
16°F
Dew Point
12°F
2 PM
27°F
10%
13mph
W
Mostly Sunny
Humidity
51%
Feels like
16°F
Dew Point
11°F
3 PM
27°F
10%
13mph
W
Mostly Sunny
Humidity
51%
Feels like
16°F
Dew Point
12°F
4 PM
27°F
10%
12mph
WSW
Mostly Sunny
Humidity
52%
Feels like
16°F
Dew Point
11°F
4:35 PM
5 PM
26°F
0%
11mph
WSW
Mostly Clear
Humidity
55%
Feels like
16°F
Dew Point
12°F
6 PM
26°F
0%
10mph
WSW
Clear
Humidity
58%
Feels like
16°F
Dew Point
13°F
7 PM
26°F
0%
9mph
WSW
Clear
Humidity
57%
Feels like
16°F
Dew Point
12°F
8 PM
25°F
0%
9mph
WSW
Clear
Humidity
59%
Feels like
16°F
Dew Point
13°F
9 PM
25°F
0%
8mph
WSW
Clear
Humidity
60%
Feels like
16°F
Dew Point
13°F
10 PM
25°F
0%
8mph
WSW
Clear
Humidity
62%
Feels like
16°F
Dew Point
14°F
11 PM
25°F
0%
8mph
WSW
Clear
Humidity
63%
Feels like
17°F
Dew Point
14°F

Snow and Ice Forecast Through Monday

Storm Brings Heavy Midwestern Snow, New England Icing

A winter storm will deliver snow and significant icing from the Midwest to New England.

Today's Weather Outlook

Today's Weather Outlook

Satellite image of Hurricane Melissa

2025 Year in Review: Powerful Hurricanes in the Atlantic

A frame from an automated video of a tornado and its mesocyclone that derailed multiple train cars near Enderlin, North Dakota and destroyed multiple homes on June 20, 2025. (ChrisWx via Wikimedia Commons)

2025 Year in Review: Extreme Weather - January through June

Photos and videos from the Palisades Fire that started in the City of Los Angeles, January 8, 2025. (CAL FIRE_Official via Wikimedia Commons)

2025 Year in Review: Billion Dollar Disasters - The California Wildfires

Hurricane Erick at its peak intensity before making landfall on Guerrero, Mexico on June 19, 2025 (NOAA/Wikimedia Commons)

2025 Year in Review: Active Tropical Season for The Pacific

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide