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Hazardous Weather Conditions

No active alerts for PORT JEFFERSON S, NEW YORK

Current Conditions: PORT JEFFERSON S, NEW YORK

NULL


33.8 F
Last Updated on Feb 28 2026, 10:45 PM EST
Humidity: 93%
Wind Speed: 0.0 mph
Barometer: 30.03 in
Dewpoint: 32.0 F
Visibility: 9.00 mi
Precip: --
Heat Index: NA
Wind Chill: NA
Current conditions at:

ISLIP (KISP)

Lat: 40.8 Lon: -73.1

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5 Day Forecast for PORT JEFFERSON S, NEW YORK (11776)

Saturday
Snow
High 48 °F
Saturday
Night
Rain Likely
Low 30 °F
Sunday
Forecast Missing
High 37 °F
Sunday
Night
Forecast Missing
Low 17 °F
Monday
Forecast Missing
High 28 °F
Monday
Night
Forecast Missing
Low 19 °F
Tuesday
Forecast Missing
High 37 °F
Tuesday
Night
Forecast Missing
Low 30 °F
Wednesday
Forecast Missing
High 42 °F



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Observation History for PORT JEFFERSON S, NEW YORK


Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
10:45 PM EST 0.0 9.00 NULL -- 33.8 32.0 93% NA NA 30.03 1016.9
10:35 PM EST 0.0 9.00 NULL -- 33.8 30.2 86% NA NA 30.03 1016.9
10:25 PM EST 0.0 9.00 NULL -- 33.8 30.2 86% NA NA 30.03 1016.9
10:20 PM EST 0.0 9.00 NULL -- 33.8 32.0 93% NA NA 30.03 1016.9
10:15 PM EST 0.0 9.00 NULL -- 35.6 33.8 93% NA NA 30.03 1016.9
10:05 PM EST 0.0 9.00 NULL -- 33.8 33.8 100% NA NA 30.03 1016.9
10:00 PM EST 0.0 9.00 NULL -- 33.8 33.8 100% NA NA 30.03 1016.9
09:50 PM EST 0.0 10.00 Clear -- 35.6 33.8 93% NA NA 30.04 1017.3
09:45 PM EST 0.0 10.00 Clear -- 35.6 33.8 93% NA NA 30.04 1017.3
09:35 PM EST E 3.4 5.00 Fog/Mist -- 33.8 32.0 93% 30.7 NA 30.04 1017.3
09:25 PM EST 0.0 6.00 Fog/Mist -- 35.6 33.8 93% NA NA 30.04 1017.3
09:20 PM EST 0.0 8.00 Clear -- 35.6 33.8 93% NA NA 30.04 1017.3
09:05 PM EST 0.0 7.00 Clear -- 33.8 32.0 93% NA NA 30.04 1017.3
09:00 PM EST 0.0 7.00 Clear -- 33.8 33.8 100% NA NA 30.04 1017.3
08:50 PM EST 0.0 7.00 Clear -- 33.8 32.0 93% NA NA 30.04 1017.3
08:40 PM EST 0.0 9.00 Clear -- 33.8 32.0 93% NA NA 30.04 1017.3
08:35 PM EST 0.0 10.00 Clear -- 35.6 32.0 87% NA NA 30.04 1017.3
08:30 PM EST 0.0 9.00 Clear -- 35.6 32.0 87% NA NA 30.04 1017.3
08:25 PM EST 0.0 9.00 Clear -- 35.6 32.0 87% NA NA 30.04 1017.3
08:20 PM EST 0.0 9.00 Clear -- 35.6 32.0 87% NA NA 30.04 1017.3
08:10 PM EST 0.0 10.00 Clear -- 35.6 33.8 93% NA NA 30.04 1017.3
08:05 PM EST 0.0 10.00 Clear -- 35.6 33.8 93% NA NA 30.04 1017.3
07:50 PM EST 0.0 10.00 NULL -- 35.6 33.8 93% NA NA 30.04 1017.3
07:45 PM EST 0.0 10.00 NULL -- 37.4 33.8 87% NA NA 30.04 1017.3

Regional Weather Observation

ISLIP (KISP)

NULL
33.8 F

BROOKHAVEN (KHWV)

Fog/Mist
30.2 F

BRIDGEPORT (KBDR)

Clear
35.6 F

WHITE PLAINS (KHPN)

Clear
35.6 F

FARMINGDALE (KFRG)

Clear
35.6 F

WESTHAMPTON BEAC (KFOK)

Freezing Fog
26.6 F

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