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.

Overcast and Breezy

44°F

7°C

Humidity 85%
Wind Speed SE 21 G 30 mph
Barometer 30.13 in (1020.4 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 16 Mar 12:56 am EDT
Extended Forecast for

Lake Grove NY

Wind Advisory March 16, 02:00pm until March 17, 04:00am
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Showers, with thunderstorms also possible after 5am. Low around 39. Southeast wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. Patchy fog. High near 58. South wind 14 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 34. Breezy, with a south wind 14 to 20 mph, with gusts as high as 48 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 34 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 43. West wind 13 to 16 mph, with gusts as high as 29 mph.

    High: 43 °F

    Chance
    Showers then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 24. West wind 8 to 11 mph, with gusts as high as 24 mph.

    Low: 24 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers, with thunderstorms also possible after 5am. Low around 39. Southeast wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm. Patchy fog. High near 58. South wind 14 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 34. Breezy, with a south wind 14 to 20 mph, with gusts as high as 48 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 43. West wind 13 to 16 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 24. West wind 8 to 11 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 43.
Thursday Night
Partly cloudy, with a low around 32.
Friday
Mostly sunny, with a high near 49.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Grove NY
 40.85°N 73.1°W (Elev. 144 ft)
Last Update:
10:28 pm EDT Mar 15, 2026
Forecast Valid:
1am EDT Mar 16, 2026-6pm EDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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