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

27°F

-3°C

Humidity 96%
Wind Speed Calm
Barometer 30.13 in (1020.4 mb)
Dewpoint 26°F (-3°C)
Visibility 7.00 mi
Last update 28 Feb 1:56 am EST
Extended Forecast for

Bay Shore NY

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 29. South wind around 5 mph.

    Low: 29 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 44. South wind 3 to 8 mph.

    High: 44 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog between 10pm and 1am. Otherwise, partly cloudy, with a low around 29. Calm wind becoming north 5 to 8 mph after midnight.

    Low: 29 °F

    Patchy Fog

  • Sunday

    Sunday: Snow likely, mainly between 10am and 4pm. Increasing clouds, with a high near 37. Wind chill values between 25 and 30. North wind 8 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before 7pm. Mostly clear, with a low around 15. North wind 9 to 14 mph.

    Low: 15 °F

    Chance Snow
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 29.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Partly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 35. Chance of precipitation is 90%.

    Low: 35 °F

    Rain

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 29. South wind around 5 mph.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 44. South wind 3 to 8 mph.
Saturday Night
Patchy fog between 10pm and 1am. Otherwise, partly cloudy, with a low around 29. Calm wind becoming north 5 to 8 mph after midnight.
Sunday
Snow likely, mainly between 10am and 4pm. Increasing clouds, with a high near 37. Wind chill values between 25 and 30. North wind 8 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
A 30 percent chance of snow before 7pm. Mostly clear, with a low around 15. North wind 9 to 14 mph.
Monday
Sunny, with a high near 29.
Monday Night
Mostly clear, with a low around 20.
Tuesday
A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Tuesday Night
Rain. Low around 35. Chance of precipitation is 90%.
Wednesday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 34.
Thursday
A 40 percent chance of rain. Cloudy, with a high near 46.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 38.
Friday
A 30 percent chance of rain. Cloudy, with a high near 48.
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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:
12:55 am EST Feb 28, 2026
Forecast Valid:
2am EST Feb 28, 2026-6pm EST Mar 6, 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