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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

25°F

-4°C

Humidity	69%
Wind Speed	NW 13 mph
Barometer	29.71 in (1006.2 mb)
Dewpoint	16°F (-9°C)
Visibility	10.00 mi
Wind Chill	13°F (-11°C)
Last update	26 Jan 3:56 pm EST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Port Jefferson NY

This Afternoon
High: 29 °F
Chance
Flurries
Tonight
Low: 17 °F
Gradual
Clearing and
Windy
Tuesday
High: 21 °F
Sunny then
Chance
Flurries and
Breezy
Tuesday Night
Low: 16 °F
Mostly Clear
and Breezy
Wednesday
High: 23 °F
Mostly Sunny
Wednesday Night
Low: 14 °F
Mostly Cloudy
Thursday
High: 21 °F
Mostly Sunny
Thursday Night
Low: 11 °F
Mostly Clear
Friday
High: 19 °F
Cold

Detailed Forecast

This Afternoon

A chance of flurries. Mostly cloudy, with a high near 29. Wind chill values between 15 and 20. Northwest wind around 15 mph.

Tonight

Mostly cloudy during the early evening, then gradual clearing, with a low around 17. Wind chill values between zero and 10. Windy, with a northwest wind 22 to 26 mph.

Tuesday

A chance of flurries after noon. Increasing clouds, with a high near 21. Wind chill values between zero and 5. Breezy, with a west wind 16 to 22 mph.

Tuesday Night

Mostly clear, with a low around 16. Wind chill values between zero and 5. Breezy, with a west wind 18 to 22 mph.

Wednesday

Mostly sunny, with a high near 23. West wind 10 to 17 mph.

Wednesday Night

Mostly cloudy, with a low around 14.

Thursday

Mostly sunny, with a high near 21.

Thursday Night

Mostly clear, with a low around 11.