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

38°F

3°C

Humidity 29%
Wind Speed N 14 G 20 mph
Barometer 30.39 in (1029.3 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 28 Mar 3:56 pm EDT
Extended Forecast for

Bay Shore NY

  • Tonight

    Tonight: Mostly clear, with a low around 31. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 25 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 48. Light southwest wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 48 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 40. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 57. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 57 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 63.

    High: 63 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. Breezy.

    Low: 50 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: A 40 percent chance of rain after 2pm. Partly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 8pm. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 31. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 25 mph.
Sunday
Sunny, with a high near 48. Light southwest wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Sunday Night
Increasing clouds, with a low around 40. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Monday
Partly sunny, with a high near 57. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Monday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 50. Breezy.
Wednesday
A 40 percent chance of rain after 2pm. Partly sunny, with a high near 62.
Wednesday Night
Rain likely, mainly after 8pm. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 47.
Thursday Night
Rain and snow likely. Cloudy, with a low around 36. Chance of precipitation is 60%.
Friday
Rain and snow likely. Cloudy, with a high near 46. Breezy. Chance of precipitation is 60%.
Friday Night
Rain likely. Cloudy, with a low around 38. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain. Cloudy, with a high near 49.
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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:
2:35 pm EDT Mar 28, 2026
Forecast Valid:
4pm EDT Mar 28, 2026-6pm EDT Apr 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