Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Snow Fog/Mist

19°F

-7°C

Humidity 88%
Wind Speed N 10 mph
Barometer 29.72 in (1006.6 mb)
Dewpoint 16°F (-9°C)
Visibility 1.00 mi
Wind Chill8°F (-13°C)
Last update 26 Jan 5:56 am EST
Extended Forecast for

Lake Grove NY

  • Today

    Today: A 40 percent chance of snow before 1pm.  Cloudy, with a high near 29. Wind chill values between 15 and 20. North wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 29 °F

    Chance Snow

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 12. Wind chill values between zero and 10. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.

    Low: 12 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 22. Wind chill values between zero and 10. West wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 22 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10. Wind chill values between zero and 5. West wind 8 to 10 mph, with gusts as high as 22 mph.

    Low: 10 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 22. West wind 7 to 9 mph.

    High: 22 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 21.

    High: 21 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 5.

    Low: 5 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and cold, with a high near 19.

    High: 19 °F

    Cold

Detailed Forecast

Today
A 40 percent chance of snow before 1pm. Cloudy, with a high near 29. Wind chill values between 15 and 20. North wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 12. Wind chill values between zero and 10. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 22. Wind chill values between zero and 10. West wind 9 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 10. Wind chill values between zero and 5. West wind 8 to 10 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 22. West wind 7 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 9.
Thursday
Mostly sunny, with a high near 21.
Thursday Night
Mostly clear, with a low around 5.
Friday
Mostly sunny and cold, with a high near 19.
Friday Night
Mostly clear, with a low around 8.
Saturday
Sunny, with a high near 24.
Saturday Night
Mostly clear, with a low around 12.
Sunday
Mostly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Grove NY
 40.85°N 73.1°W (Elev. 144 ft)
5:42 am EST Jan 26, 2026
6am EST Jan 26, 2026-6pm EST Feb 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database