National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Snow

37°F

3°C

Humidity 76%
Wind Speed SW 10 G 20 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 30°F (-1°C)
Visibility 3.00 mi
Wind Chill30°F (-1°C)
Last update 17 Jan 1:56 pm EST
Extended Forecast for

Bay Shore NY

Winter Weather Advisory January 18, 10:00am until January 18, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Rain likely before 4pm, then a slight chance of rain and snow. Cloudy, with a high near 44. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: A slight chance of rain and snow before 1am, then a slight chance of rain between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 31. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Periods of rain and snow, becoming all snow after 11am. High near 35. Calm wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 35 °F

    Rain/Snow
    then Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind around 7 mph.

    Low: 23 °F

    Chance Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 34. West wind 8 to 14 mph, with gusts as high as 26 mph.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain likely before 4pm, then a slight chance of rain and snow. Cloudy, with a high near 44. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tonight
A slight chance of rain and snow before 1am, then a slight chance of rain between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 31. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Sunday
Periods of rain and snow, becoming all snow after 11am. High near 35. Calm wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 40 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind around 7 mph.
M.L.King Day
Mostly sunny, with a high near 34. West wind 8 to 14 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 15.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 34.
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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:
1:04 pm EST Jan 17, 2026
Forecast Valid:
2pm EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation