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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Road Impact: High — Thunderstorms
Thunderstorms possible. Expect reduced visibility and standing water on roadways.
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No active weather alerts for Nassau or Suffolk County.
Nassau County OKX 33,37
Slight Chance Showers And Thunderstorms then Partly Cloudy
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A slight chance of showers and thunderstorms before 8pm. Partly cloudy. Low around 66, with temperatures rising to around 68 overnight. Northwest wind 5 to 13 mph. Chance of precipitation is 20%.
Sunny
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Sunny. High near 79, with temperatures falling to around 77 in the afternoon. North wind 2 to 13 mph.
Partly Cloudy
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Partly cloudy, with a low around 67. Southwest wind around 7 mph.
Partly Sunny then Slight Chance Rain Showers
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A slight chance of rain showers after 2pm. Partly sunny. High near 82, with temperatures falling to around 80 in the afternoon. Southwest wind 5 to 12 mph. Chance of precipitation is 20%.
Chance Showers And Thunderstorms
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A slight chance of rain showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. Southwest wind 8 to 12 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Partly Sunny then Slight Chance Rain Showers
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A slight chance of rain showers after 2pm. Partly sunny. High near 82, with temperatures falling to around 80 in the afternoon.
Slight Chance Showers And Thunderstorms
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A slight chance of rain showers before 8pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Chance Showers And Thunderstorms
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A chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 40%.
Chance Showers And Thunderstorms
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A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 50%.
Chance Showers And Thunderstorms
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A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Suffolk County OKX 55,35
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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: Aug 28, 7:36 PM ET.