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.

Mostly Cloudy

38°F

3°C

Humidity 57%
Wind Speed N 15 mph
Barometer 29.89 in (1012.3 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 26 Feb 9:56 am EST
Extended Forecast for

Bay Shore NY

  • Today

    Today: A slight chance of rain and snow after 1pm. Mostly cloudy, with a high near 38. Northeast wind 3 to 5 mph. Chance of precipitation is 20%.

    High: 38 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Light north wind.

    Low: 23 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 39. Wind chill values between 25 and 35. Calm wind becoming south around 5 mph in the afternoon.

    High: 39 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. South wind 3 to 5 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 45. Southwest wind around 6 mph.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 29.

    Low: 29 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradual clearing during the afternoon, with a high near 38.

    High: 38 °F

    Clearing Late

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of snow. Mostly cloudy, with a high near 28.

    High: 28 °F

    Chance Snow

Detailed Forecast

Today
A slight chance of rain and snow after 1pm. Mostly cloudy, with a high near 38. Northeast wind 3 to 5 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Light north wind.
Friday
Sunny, with a high near 39. Wind chill values between 25 and 35. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 30. South wind 3 to 5 mph.
Saturday
Sunny, with a high near 45. Southwest wind around 6 mph.
Saturday Night
Increasing clouds, with a low around 29.
Sunday
Cloudy, then gradual clearing during the afternoon, with a high near 38.
Sunday Night
Partly cloudy, with a low around 18.
Monday
A 30 percent chance of snow. Mostly cloudy, with a high near 28.
Monday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 19.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Tuesday Night
A 50 percent chance of rain. Cloudy, with a low around 28.
Wednesday
A 50 percent chance of rain. Partly sunny, with a high near 42.
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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:
10:42 am EST Feb 26, 2026
Forecast Valid:
10am EST Feb 26, 2026-6pm EST Mar 4, 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