Long Island Weather — Alerts & Forecast

Official NWS alerts and forecasts for Nassau and Suffolk County. Live observations from MacArthur Airport (KISP).

Current Conditions — KISP / Islip MacArthur Airport

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Nassau County OKX 33,37

Today 75°F

Sunny

Wind: 13 to 17 mph N 4% precip

▶ Details

Sunny, with a high near 75. North wind 13 to 17 mph.

Tonight 59°F

Clear

Wind: 9 to 13 mph N

▶ Details

Clear, with a low around 59. North wind 9 to 13 mph.

Tuesday 70°F

Sunny

Wind: 6 to 9 mph E

▶ Details

Sunny, with a high near 70. East wind 6 to 9 mph.

Tuesday Night 63°F

Mostly Clear

Wind: 3 to 9 mph S

▶ Details

Mostly clear, with a low around 63. South wind 3 to 9 mph.

Wednesday 78°F

Sunny

Wind: 3 to 8 mph SW

▶ Details

Sunny, with a high near 78. Southwest wind 3 to 8 mph.

Wednesday Night 68°F

Partly Cloudy

Wind: 8 mph S

▶ Details

Partly cloudy, with a low around 68.

Thursday 80°F

Mostly Sunny

Wind: 5 to 12 mph SW 1% precip

▶ Details

Mostly sunny, with a high near 80.

Thursday Night 70°F

Partly Cloudy

Wind: 12 mph SW 9% precip

▶ Details

Partly cloudy, with a low around 70.

Friday 79°F

Partly Sunny

Wind: 10 mph N 10% precip

▶ Details

Partly sunny, with a high near 79.

Friday Night 67°F

Slight Chance Rain Showers

Wind: 8 to 12 mph E 15% precip

▶ Details

A slight chance of rain showers between 8pm and 2am. Partly cloudy, with a low around 67.

Suffolk County OKX 55,35

Forecast data unavailable.

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Data: National Weather Service (weather.gov). Nassau grid OKX/33,37 · Suffolk grid OKX/55,35 · Alert zones NYZ077–NYZ080, NYZ179. Observations from KISP (MacArthur Airport). Forecast updated each build: Sep 14, 7:05 AM ET.