Hourly Weather Forecast - Port Jefferson, NY

12 AM
18°F
0%
11mph
W
Clear
Humidity
56%
Feels like
5°F
Dew Point
5°F
1 AM
17°F
0%
10mph
W
Clear
Humidity
57%
Feels like
5°F
Dew Point
4°F
2 AM
17°F
0%
9mph
W
Clear
Humidity
57%
Feels like
6°F
Dew Point
4°F
3 AM
17°F
0%
8mph
W
Clear
Humidity
58%
Feels like
6°F
Dew Point
4°F
4 AM
17°F
0%
7mph
W
Clear
Humidity
58%
Feels like
7°F
Dew Point
5°F
5 AM
17°F
0%
6mph
W
Mostly Clear
Humidity
58%
Feels like
8°F
Dew Point
5°F
6 AM
16°F
0%
6mph
WSW
Partly Cloudy
Humidity
61%
Feels like
8°F
Dew Point
5°F
7 AM
16°F
0%
5mph
WSW
Partly Cloudy
Humidity
61%
Feels like
9°F
Dew Point
5°F
7:11 AM
8 AM
18°F
0%
5mph
WSW
Partly Cloudy
Humidity
59%
Feels like
10°F
Dew Point
6°F
9 AM
21°F
0%
5mph
SW
Partly Cloudy
Humidity
53%
Feels like
14°F
Dew Point
6°F
10 AM
24°F
0%
6mph
SW
Mostly Cloudy
Humidity
49%
Feels like
16°F
Dew Point
8°F
11 AM
27°F
10%
8mph
SW
Mostly Cloudy
Humidity
47%
Feels like
18°F
Dew Point
9°F
12 PM
29°F
10%
10mph
SSW
Cloudy
Humidity
47%
Feels like
20°F
Dew Point
11°F
1 PM
31°F
10%
12mph
SSW
Cloudy
Humidity
48%
Feels like
21°F
Dew Point
13°F
2 PM
32°F
0%
14mph
SSW
Mostly Cloudy
Humidity
51%
Feels like
22°F
Dew Point
16°F
3 PM
33°F
0%
14mph
SSW
Partly Cloudy
Humidity
55%
Feels like
23°F
Dew Point
19°F
4 PM
33°F
0%
15mph
SSW
Partly Cloudy
Humidity
60%
Feels like
23°F
Dew Point
21°F
4:55 PM
5 PM
34°F
0%
16mph
SSW
Mostly Clear
Humidity
64%
Feels like
24°F
Dew Point
23°F
6 PM
35°F
0%
16mph
SSW
Mostly Clear
Humidity
67%
Feels like
25°F
Dew Point
25°F
7 PM
36°F
0%
17mph
SSW
Mostly Clear
Humidity
68%
Feels like
26°F
Dew Point
27°F
8 PM
37°F
0%
16mph
SSW
Clear
Humidity
68%
Feels like
28°F
Dew Point
27°F
9 PM
38°F
0%
16mph
SSW
Clear
Humidity
68%
Feels like
29°F
Dew Point
28°F
10 PM
38°F
0%
15mph
SSW
Clear
Humidity
67%
Feels like
29°F
Dew Point
28°F
11 PM
38°F
0%
15mph
SSW
Clear
Humidity
66%
Feels like
29°F
Dew Point
27°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

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