Heavy Snow in the Central/Southern Rockies; Below Average Temperatures in the Central and Eastern US

Moderate to heavy snowfall is expected in the central/southern Rockies and adjacent High Plains today. Lake-enhanced snowfall is expected downwind of the Great Lakes today. Showers and thunderstorms will be possible this evening into tonight across the western Gulf Coast states. Temperatures across much of the central and eastern CONUS will remain below average and chilly to end the week. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

38°F

3°C

Humidity	62%
Wind Speed	NW 10 mph
Barometer	30.01 in (1016.1 mb)
Dewpoint	26°F (-3°C)
Visibility	10.00 mi
Wind Chill	31°F (-1°C)
Last update	3 Dec 10:56 am EST

More Information:

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

Extended Forecast for

Stony Brook NY

Today
High: 42 °F
Mostly Sunny
Tonight
Low: 30 °F
Mostly Clear
Thursday
High: 42 °F
Mostly Sunny
then Partly
Sunny and
Breezy
Thursday Night
Low: 18 °F
Mostly Clear
and Blustery
then Mostly
Clear
Friday
High: 31 °F
Increasing
Clouds
Friday Night
Low: 28 °F
Chance Light
Snow
Saturday
High: 40 °F
Partly Sunny
Saturday Night
Low: 30 °F
Mostly Cloudy
Sunday
High: 40 °F
Partly Sunny

Detailed Forecast

Today

Mostly sunny, with a high near 42. Northwest wind 6 to 10 mph.

Tonight

Mostly clear, with a low around 30. Wind chill values between 20 and 25. West wind 5 to 10 mph.

Thursday

Increasing clouds, with a high near 42. Wind chill values between 20 and 30. Breezy, with a west wind 10 to 20 mph.

Thursday Night

Mostly clear, with a low around 18. Wind chill values between 10 and 15. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph.

Friday

Increasing clouds, with a high near 31. North wind around 7 mph becoming south in the afternoon.

Friday Night

A 40 percent chance of light snow. Mostly cloudy, with a low around 28.

Saturday

Partly sunny, with a high near 40.

Saturday Night

Mostly cloudy, with a low around 30.

Sunday

Partly sunny, with a high near 40.

Sunday Night

Mostly cloudy, with a low around 26.