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.

Fair

55°F

13°C

Humidity 90%
Wind Speed Calm
Barometer 29.96 in (1014.4 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 14 Apr 3:56 am EDT
Extended Forecast for

Bay Shore NY

  • Today

    Today: Patchy fog between 7am and 9am. Otherwise, mostly sunny, with a high near 71. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 71 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 74. South wind 5 to 10 mph.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 54. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 72. South wind 5 to 9 mph.

    High: 72 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 70.

    High: 70 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Patchy fog between 7am and 9am. Otherwise, mostly sunny, with a high near 71. Light and variable wind becoming south 5 to 10 mph in the morning.
Tonight
Partly cloudy, with a low around 54. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 74. South wind 5 to 10 mph.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 54. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 72. South wind 5 to 9 mph.
Thursday Night
Mostly cloudy, with a low around 55.
Friday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 70.
Friday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 60.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 61.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 55.
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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:
2:15 am EDT Apr 14, 2026
Forecast Valid:
4am EDT Apr 14, 2026-6pm EDT Apr 20, 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