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.

Partly Cloudy

47°F

8°C

Humidity 54%
Wind Speed SW 10 mph
Barometer 30.04 in (1017.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 6 Apr 6:56 pm EDT
Extended Forecast for

Bay Shore NY

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 40. Southwest wind 5 to 10 mph becoming light and variable.

    Low: 40 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 8am, then a slight chance of showers after 2pm. Mostly sunny, with a high near 52. Northwest wind 7 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 31. Wind chill values between 20 and 25. North wind around 11 mph, with gusts as high as 23 mph.

    Low: 31 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 47. Wind chill values between 25 and 35 early. Northeast wind 6 to 8 mph becoming southeast in the afternoon.

    High: 47 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34. Southeast wind 3 to 5 mph.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 40. Southwest wind 5 to 10 mph becoming light and variable.
Tuesday
A slight chance of showers before 8am, then a slight chance of showers after 2pm. Mostly sunny, with a high near 52. Northwest wind 7 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 31. Wind chill values between 20 and 25. North wind around 11 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 47. Wind chill values between 25 and 35 early. Northeast wind 6 to 8 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 34. Southeast wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 50.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 63.
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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:
5:30 pm EDT Apr 6, 2026
Forecast Valid:
7pm EDT Apr 6, 2026-6pm EDT Apr 13, 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