National Weather Service

News Headlines

Heading to the Beach? Check out our Surf Zone Forecast

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79° N Lon: 73.1° W Elev: 98 ft.

Partly Cloudy

80°F

27°C

Humidity	41%
Wind Speed	NW 8 mph
Barometer	30.06 in (1017.6 mb)
Dewpoint	54°F (12°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	18 Jul 6:56 pm EDT

More Information:

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

Detailed forecast for

Northwest Suffolk

This Afternoon

Mostly sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph.

Tonight

Partly cloudy in the evening, then clearing. Lows in the mid 60s. North winds around 5 mph.

Saturday

Sunny. Highs in the mid 80s. East winds around 5 mph, becoming south in the afternoon.

Saturday Night

Mostly cloudy with a chance of showers and thunderstorms. Humid with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 50 percent.

Sunday

Partly sunny with a chance of showers and thunderstorms. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values in the upper 90s.

Sunday Night

Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 60s. Chance of rain 50 percent.

Monday

Sunny. Highs in the mid 80s.

Monday Night

Mostly clear. Lows in the mid 60s.

Tuesday

Sunny. Highs in the lower 80s.

Tuesday Night

Mostly clear. Lows in the upper 60s.

Wednesday

Sunny. Highs in the mid 80s.

Wednesday Night

Partly cloudy. Lows in the lower 70s.