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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Snow Fog/Mist

26°F

-3°C

Humidity	84%
Wind Speed	E 8 mph
Barometer	29.96 in (1014.6 mb)
Dewpoint	22°F (-6°C)
Visibility	0.25 mi
Wind Chill	18°F (-8°C)
Last update	26 Dec 8:56 pm EST

More Information:

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

Extended Forecast for

Port Jefferson NY

Winter Storm Warning December 26, 09:54pm until December 27, 01:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 26, 09:54pm until December 27, 01:00pm
NOW until 1:00pm Sat
Winter Storm Warning
Tonight
Low: 30 °F
Heavy Snow
and Blustery
Saturday
High: 33 °F
Snow Likely
and Breezy
then Partly
Sunny
Saturday Night
Low: 25 °F
Partly Cloudy
Sunday
High: 40 °F
Mostly Cloudy
Sunday Night
Low: 35 °F⇑
Rain
Monday
High: 49 °F
Rain and
Breezy
Monday Night
Low: 30 °F
Partly Cloudy
and Windy
Tuesday
High: 33 °F
Mostly Cloudy
and Windy

Detailed Forecast

Tonight

Snow. The snow could be heavy at times. Steady temperature around 30. Wind chill values between 15 and 20. Blustery, with an east wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Chance of precipitation is 100%. Total nighttime snow accumulation of 7 to 11 inches possible.

Saturday

Snow likely, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 33. Wind chill values between 15 and 25. Breezy, with a north wind 17 to 22 mph decreasing to 10 to 15 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 25. Wind chill values between 20 and 25. Northwest wind 6 to 8 mph.

Sunday

Mostly cloudy, with a high near 40. Wind chill values between 20 and 30. Northwest wind 6 to 8 mph becoming southwest in the afternoon.

Sunday Night

Rain. Temperature rising to around 43 by 5am. South wind 8 to 14 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Monday

Rain. High near 49. Breezy. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday Night

Partly cloudy, with a low around 30. Windy.

Tuesday

Mostly cloudy, with a high near 33. Windy.

Tuesday Night

Mostly cloudy, with a low around 29. Windy.

Wednesday

Mostly sunny, with a high near 35. Breezy.

Wednesday Night

Mostly cloudy, with a low around 27. Breezy.