National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain

66°F

19°C

Humidity 73%
Wind Speed W 10 mph
Barometer 29.75 in (1007.4 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Oct 10:56 pm EDT
Extended Forecast for

Selden NY

  • Tonight

    Tonight: A chance of showers before 2am, then rain likely after 2am. Cloudy, with a low around 49. Northwest wind 8 to 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a north wind 18 to 21 mph. Chance of precipitation is 60%.

    High: 52 °F

    Breezy. Rain
    Likely then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. North wind around 14 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 54. Northeast wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Northeast wind 5 to 9 mph.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers before 2am, then rain likely after 2am. Cloudy, with a low around 49. Northwest wind 8 to 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 52. Breezy, with a north wind 18 to 21 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 38. North wind around 14 mph.
Sunday
Sunny, with a high near 54. Northeast wind 7 to 10 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 43. Northeast wind 5 to 9 mph.
Monday
Partly sunny, with a high near 58.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Mostly cloudy, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 46.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 60.
Thursday Night
Mostly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Selden NY
 40.86°N 73.04°W (Elev. 115 ft)
Last Update:
7:27 pm EDT Oct 16, 2026
Forecast Valid:
11pm EDT Oct 16, 2026-6pm EDT Oct 23, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation