Cold System Impacting California into Southwest/Four Corners; System Tracking From Mississippi Valley Into East, Possible Prelude To Much Stronger System

A storm digging through CA into the Southwest and Four Corners region will produce heavy mountain snow and showers. Further east, another storm will track from the Mid MS Valley to the Mid-Atlantic for a swath of snow and ice w/ locally heavy rain through Monday. By Tuesday, a stronger storm w/ a wealth of moisture will impact the eastern two-thirds w/ excessive rain, heavy snow and ice. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

En Español

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

35°F

2°C

Humidity	46%
Wind Speed	S 10 mph
Barometer	30.14 in (1020.5 mb)
Dewpoint	16°F (-9°C)
Visibility	10.00 mi
Wind Chill	27°F (-3°C)
Last update	17 Feb 12:56 pm EST

More Information:

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

Extended Forecast for

West Sayville NY

This
Afternoon

Partly Sunny
High: 37 °F
Tonight

Snow then
Wintry Mix
Low: 31 °F
Washington's
Birthday

Rain Likely
High: 38 °F
Monday
Night

Decreasing
Clouds
Low: 23 °F
Tuesday

Sunny
High: 35 °F
Tuesday
Night

Increasing
Clouds
Low: 21 °F
Wednesday

Mostly Cloudy
then Chance
Snow
High: 35 °F
Wednesday
Night

Snow Likely
then Wintry
Mix Likely
Low: 28 °F
Thursday

Rain Likely
High: 43 °F

Detailed Forecast

This Afternoon

Partly sunny, with a high near 37. Calm wind becoming southeast around 5 mph.

Tonight

Snow before 1am, then rain or freezing rain. Low around 31. Wind chill values between 25 and 30. Southeast wind 6 to 9 mph becoming east after midnight. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. New snow accumulation of 1 to 2 inches possible.

Washington's Birthday

Rain likely, mainly before 10am. Mostly cloudy, with a high near 38. Wind chill values between 25 and 30. East wind 7 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Monday Night

Mostly cloudy, then gradually becoming clear, with a low around 23. Wind chill values between 10 and 20. Northwest wind 11 to 14 mph.

Tuesday

Sunny, with a high near 35. Northwest wind around 9 mph.

Tuesday Night

Increasing clouds, with a low around 21.

Wednesday

A 50 percent chance of snow after noon. Mostly cloudy, with a high near 35.

Wednesday Night

Snow likely before midnight, then freezing rain and sleet likely between midnight and 3am, then rain likely after 3am. Cloudy, with a low around 28. Chance of precipitation is 60%.

Thursday

Rain likely, mainly before 9am. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.

Thursday Night

Mostly cloudy, with a low around 30.

Friday

Mostly sunny, with a high near 41.

Friday Night

Partly cloudy, with a low around 31.

Saturday

A 30 percent chance of rain. Mostly cloudy, with a high near 43.