Areas of Severe Thunderstorms and Excessive Rainfall Thursday

Severe thunderstorms posing a risk for strong gusts and/or large hail are possible across portions of the northern and central Plains, the Lower Missouri to Lower Ohio Valleys, and across the Mid-Atlantic Thursday afternoon and evening. Excessive rainfall may bring flash and urban flooding over the Mid-Mississippi and Ohio Valleys, and Mid-Atlantic on Thursday. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

68°F

20°C

Humidity 87%
Wind Speed SW 6 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 9 Jul 5:56 am EDT
Extended Forecast for

Nesconset NY

  • Today

    Today: Patchy fog before 7am.  Otherwise, mostly sunny, with a high near 86. Southwest wind 6 to 14 mph.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 11pm and 2am.  Mostly cloudy, with a low around 71. Southwest wind 5 to 9 mph becoming light  after midnight.

    Low: 71 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Heat index values as high as 97. West wind 6 to 10 mph.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 71. Northwest wind 3 to 6 mph.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 86. North wind 6 to 8 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 86. Southwest wind 6 to 14 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 11pm and 2am. Mostly cloudy, with a low around 71. Southwest wind 5 to 9 mph becoming light after midnight.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 97. West wind 6 to 10 mph.
Friday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Northwest wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 86. North wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 67.
Monday
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Nesconset NY
 40.83°N 73.14°W (Elev. 98 ft)
7:53 pm EDT Jul 8, 2026
6am EDT Jul 9, 2026-6pm EDT Jul 15, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database