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.

Fog

68°F

20°C

Humidity 100%
Wind Speed S 5 mph
Barometer 29.96 in (1014.5 mb)
Dewpoint 68°F (20°C)
Visibility 0.25 mi
Last update 18 Jun 10:56 am EDT
Extended Forecast for

Selden NY

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 2pm. Patchy fog before 2pm. Otherwise, cloudy, with a high near 79. South wind around 7 mph.

    High: 79 °F

    Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 67. South wind 3 to 5 mph.

    Low: 67 °F

    Chance
    Showers then
    Mostly Cloudy

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Increasing clouds, with a high near 87. Southwest wind 6 to 14 mph.

    High: 87 °F

    Partly Sunny
    then Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could be severe. Cloudy, then gradually becoming partly cloudy, with a low around 66. Southwest wind 10 to 13 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 83. Northwest wind around 11 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Saturday Night

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

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 2pm. Patchy fog before 2pm. Otherwise, cloudy, with a high near 79. South wind around 7 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 67. South wind 3 to 5 mph.
Juneteenth
A 30 percent chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Increasing clouds, with a high near 87. Southwest wind 6 to 14 mph.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could be severe. Cloudy, then gradually becoming partly cloudy, with a low around 66. Southwest wind 10 to 13 mph. Chance of precipitation is 40%.
Friday
Sunny, with a high near 83. Northwest wind around 11 mph.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly cloudy, with a low around 67.
Sunday
Partly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Sunny, with a high near 91.
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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:
10:28 am EDT Jun 18, 2025
Forecast Valid:
11am EDT Jun 18, 2025-6pm EDT Jun 24, 2025
 
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