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.

Overcast

58°F

14°C

Humidity 78%
Wind Speed SW 15 G 23 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 13 Apr 2:56 pm EDT
Extended Forecast for

Bay Shore NY

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly cloudy, with a high near 61. Southwest wind around 16 mph, with gusts as high as 29 mph.

    High: 61 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Areas of fog after 2am. Otherwise, partly cloudy, with a low around 53. West wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 53 °F

    Partly Cloudy
    then Areas
    Fog

  • Tuesday

    Tuesday: Areas of fog before 8am. Otherwise, mostly sunny, with a high near 68. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 68 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 74. Southwest wind 6 to 11 mph. Chance of precipitation is 20%.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, with a high near 72.

    High: 72 °F

    Mostly Cloudy

  • Thursday Night

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

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a high near 61. Southwest wind around 16 mph, with gusts as high as 29 mph.
Tonight
Areas of fog after 2am. Otherwise, partly cloudy, with a low around 53. West wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 68. Light southwest wind becoming south 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 53. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 74. Southwest wind 6 to 11 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Thursday
Mostly cloudy, with a high near 72.
Thursday Night
Mostly cloudy, with a low around 55.
Friday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 71.
Friday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 52.
Saturday
Partly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 49.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 64.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 54.
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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:
3:16 pm EDT Apr 13, 2026
Forecast Valid:
3pm EDT Apr 13, 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