Hourly Weather Forecast - Port Jefferson, NY

12 AM
34°F
10%
9mph
NNW
Cloudy
Humidity
58%
Feels like
27°F
Dew Point
21°F
1 AM
33°F
10%
9mph
NNW
Cloudy
Humidity
58%
Feels like
26°F
Dew Point
20°F
2 AM
32°F
10%
9mph
NNW
Cloudy
Humidity
59%
Feels like
24°F
Dew Point
19°F
3 AM
31°F
10%
10mph
NNW
Mostly Cloudy
Humidity
58%
Feels like
22°F
Dew Point
18°F

Sunday's High Temperature Outlook

Early Spring Heat Wave Zaps Southwest

Much of the Southwest will observe record-breaking heat through the weekend, with high temperatures reminiscent of mid-summer!

Weekend Weather Outlook

Today's Weather Outlook

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

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