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

26°F

-3°C

Humidity 60%
Wind Speed Calm
Barometer 29.98 in (1015.5 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 3 Jan 10:56 pm EST
Extended Forecast for

Bay Shore NY

  • Tonight

    Tonight: A slight chance of light snow between 1am and 4am. Cloudy, with a low around 24. North wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Light Snow

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 34. Wind chill values between 20 and 25. Northwest wind 5 to 11 mph.

    High: 34 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 20. Wind chill values between 15 and 20. Northwest wind 6 to 9 mph.

    Low: 20 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of light snow, mainly after 4pm. Mostly cloudy, with a high near 37. Wind chill values between 15 and 25. Northwest wind 5 to 9 mph becoming south in the afternoon.

    High: 37 °F

    Partly Sunny
    then Chance
    Light Snow

  • Monday Night

    Monday Night: A 30 percent chance of light snow, mainly before 7pm. Cloudy, with a low around 29. South wind 5 to 10 mph becoming light and variable after midnight.

    Low: 29 °F

    Chance Light
    Snow then
    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 1am. Cloudy, with a low around 33.

    Low: 33 °F

    Cloudy then
    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 45.

    High: 45 °F

    Chance Rain

  • Wednesday Night

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

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of light snow between 1am and 4am. Cloudy, with a low around 24. North wind 3 to 5 mph. Chance of precipitation is 20%.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 34. Wind chill values between 20 and 25. Northwest wind 5 to 11 mph.
Sunday Night
Partly cloudy, with a low around 20. Wind chill values between 15 and 20. Northwest wind 6 to 9 mph.
Monday
A 30 percent chance of light snow, mainly after 4pm. Mostly cloudy, with a high near 37. Wind chill values between 15 and 25. Northwest wind 5 to 9 mph becoming south in the afternoon.
Monday Night
A 30 percent chance of light snow, mainly before 7pm. Cloudy, with a low around 29. South wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
Mostly cloudy, with a high near 41.
Tuesday Night
A 30 percent chance of rain after 1am. Cloudy, with a low around 33.
Wednesday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 46.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
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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:
3:26 pm EST Jan 3, 2026
Forecast Valid:
11pm EST Jan 3, 2026-6pm EST Jan 10, 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