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.

Partly Cloudy

N/A

Humidity NA
Wind Speed SW 13 mph
Barometer 29.68 in
Dewpoint N/A
Visibility 10.00 mi
Last update 14 Jan 3:56 am EST
Extended Forecast for

Kings Park NY

  • Overnight

    Overnight: Isolated showers. Cloudy, with a low around 41. South wind around 11 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Cloudy, with a high near 47. Southwest wind 6 to 10 mph.

    High: 47 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly after 10pm. Cloudy, with a low around 34. South wind 6 to 8 mph becoming west after midnight.

    Low: 34 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of rain and snow showers before 10am, then a slight chance of snow showers between 10am and 1pm. Partly sunny, with a temperature falling to around 31 by 5pm. Wind chill values between 20 and 30. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Chance of precipitation is 20%.

    High: 42 °F⇓

    Slight Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21. Breezy, with a west wind around 22 mph.

    Low: 21 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Mostly sunny, with a high near 35. Breezy.

    High: 35 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Isolated showers. Cloudy, with a low around 41. South wind around 11 mph. Chance of precipitation is 20%.
Wednesday
Cloudy, with a high near 47. Southwest wind 6 to 10 mph.
Wednesday Night
A 50 percent chance of showers, mainly after 10pm. Cloudy, with a low around 34. South wind 6 to 8 mph becoming west after midnight.
Thursday
A slight chance of rain and snow showers before 10am, then a slight chance of snow showers between 10am and 1pm. Partly sunny, with a temperature falling to around 31 by 5pm. Wind chill values between 20 and 30. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 21. Breezy, with a west wind around 22 mph.
Friday
Mostly sunny, with a high near 35. Breezy.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 33.
Sunday Night
Partly cloudy, with a low around 22.
M.L.King Day
Mostly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 29. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kings Park NY
 40.91°N 73.24°W (Elev. 0 ft)
Last Update:
1:35 am EST Jan 14, 2026
Forecast Valid:
4am EST Jan 14, 2026-6pm EST Jan 20, 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