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

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

73°F

23°C

Humidity 46%
Wind Speed NW 20 G 30 mph
Barometer 29.73 in (1006.7 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 9:56 am EDT
Extended Forecast for

Selden NY

  • Today

    Today: Sunny, with a high near 81. West wind 16 to 18 mph, with gusts as high as 28 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80. Light and variable wind becoming west 5 to 8 mph in the morning.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 64. Light and variable wind.

    Low: 64 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 77. Light east wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 77 °F

    Showers
    Likely then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 65. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 81. West wind 16 to 18 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 64. Northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 80. Light and variable wind becoming west 5 to 8 mph in the morning.
Sunday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 64. Light and variable wind.
Monday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 77. Light east wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 65. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 67.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 83.
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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:
2:19 am EDT Jun 20, 2026
Forecast Valid:
11am EDT Jun 20, 2026-6pm EDT Jun 26, 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