Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

39°F

4°C

Humidity 38%
Wind Speed NW 14 mph
Barometer 30.38 in (1028.9 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 7 Apr 8:56 pm EDT
Extended Forecast for

Lake Grove NY

  • Tonight

    Tonight: Clear, with a low around 27. Wind chill values between 20 and 25. Blustery, with a north wind 11 to 20 mph.

    Low: 27 °F

    Mostly Clear
    and Blustery
    then Clear

  • Wednesday

    Wednesday: Sunny, with a high near 48. Wind chill values between 20 and 30 early. North wind around 7 mph becoming east in the afternoon.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 31. Light southeast wind.

    Low: 31 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 51. Calm wind becoming south 5 to 8 mph in the morning.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. Light south wind.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Friday Night

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

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 27. Wind chill values between 20 and 25. Blustery, with a north wind 11 to 20 mph.
Wednesday
Sunny, with a high near 48. Wind chill values between 20 and 30 early. North wind around 7 mph becoming east in the afternoon.
Wednesday Night
Mostly clear, with a low around 31. Light southeast wind.
Thursday
Mostly sunny, with a high near 51. Calm wind becoming south 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 38. Light south wind.
Friday
Mostly sunny, with a high near 57.
Friday Night
Mostly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 64.
Monday Night
Mostly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Grove NY
 40.85°N 73.1°W (Elev. 144 ft)
6:49 pm EDT Apr 7, 2026
9pm EDT Apr 7, 2026-6pm EDT Apr 14, 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