Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

73°F

23°C

Humidity 76%
Wind Speed NE 5 mph
Barometer 29.84 in (1010.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 4 Sep 8:56 pm EDT
Extended Forecast for

Selden NY

  • Tonight

    Tonight: Partly cloudy, with a low around 66. Northwest wind around 7 mph.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. North wind 7 to 9 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am.  Mostly cloudy, with a low around 61. East wind 5 to 7 mph.  Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 73. Northeast wind 6 to 9 mph.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. Light northwest wind.

    Low: 58 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. Northwest wind around 7 mph.
Saturday
Sunny, with a high near 80. North wind 7 to 9 mph.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 61. East wind 5 to 7 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 73. Northeast wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 58. Light northwest wind.
Labor Day
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 77.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Selden NY
 40.89°N 73.07°W (Elev. 148 ft)
2:20 pm EDT Sep 4, 2026
9pm EDT Sep 4, 2026-6pm EDT Sep 11, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database