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.

A Few Clouds

40°F

4°C

Humidity 33%
Wind Speed W 17 G 33 mph
Barometer 29.40 in (995.5 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 15 Jan 1:56 pm EST
Extended Forecast for

Bay Shore NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 43. Wind chill values between 20 and 30. West wind around 16 mph, with gusts as high as 29 mph.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. Wind chill values between 10 and 20. West wind 14 to 17 mph, with gusts as high as 32 mph.

    Low: 21 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 38. Wind chill values between 5 and 15. West wind 11 to 17 mph, with gusts as high as 33 mph.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Increasing clouds, with a low around 31. Wind chill values between 25 and 30. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 42. Southwest wind 7 to 10 mph. Chance of precipitation is 50%.

    High: 42 °F

    Chance
    Rain/Snow

  • Saturday Night

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

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34.

    High: 34 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 43. Wind chill values between 20 and 30. West wind around 16 mph, with gusts as high as 29 mph.
Tonight
Mostly cloudy, with a low around 21. Wind chill values between 10 and 20. West wind 14 to 17 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 38. Wind chill values between 5 and 15. West wind 11 to 17 mph, with gusts as high as 33 mph.
Friday Night
A 20 percent chance of snow after 1am. Increasing clouds, with a low around 31. Wind chill values between 25 and 30. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Saturday
A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 42. Southwest wind 7 to 10 mph. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 37.
Sunday Night
Partly cloudy, with a low around 22.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Sunny, with a high near 24.
Tuesday Night
Mostly clear, with a low around 13.
Wednesday
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bay Shore NY
 40.71°N 73.25°W (Elev. 13 ft)
Last Update:
12:42 pm EST Jan 15, 2026
Forecast Valid:
2pm EST Jan 15, 2026-6pm EST Jan 21, 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