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

27°F

-3°C

Humidity 75%
Wind Speed Calm
Barometer 30.34 in (1027.5 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 19 Mar 2:56 am EDT
Extended Forecast for

Bay Shore NY

  • Overnight

    Overnight: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 42. Calm wind becoming south around 6 mph in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34. Light south wind.

    Low: 34 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Rain likely. Mostly cloudy, with a low around 40. South wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 27. Calm wind.
Thursday
Mostly sunny, with a high near 42. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 34. Light south wind.
Friday
Mostly sunny, with a high near 49. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Friday Night
Rain likely. Mostly cloudy, with a low around 40. South wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 53.
Sunday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Partly sunny, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bay Shore NY
 40.71°N 73.25°W (Elev. 13 ft)
Last Update:
2:26 am EDT Mar 19, 2026
Forecast Valid:
3am EDT Mar 19, 2026-6pm EDT Mar 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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