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 Rain Fog/Mist

33°F

1°C

Humidity 96%
Wind Speed NE 7 mph
Barometer 29.82 in (1009.9 mb)
Dewpoint 32°F (0°C)
Visibility 1.50 mi
Wind Chill27°F (-3°C)
Last update 18 Jan 4:56 pm EST
Extended Forecast for

Bay Shore NY

Winter Weather Advisory January 18, 05:27pm until January 19, 04:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 18, 05:27pm until January 19, 04:00am

    NOW until 4:00am Mon

    Winter Weather Advisory

  • This Afternoon

    High: 35 °F

    Snow

  • Tonight

    Tonight: Snow, mainly before 10pm. Low around 22. North wind around 7 mph becoming west after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F

    Snow then
    Chance Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 33. Wind chill values between 15 and 20. West wind 8 to 17 mph, with gusts as high as 31 mph.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. Wind chill values between 5 and 10. West wind 11 to 15 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 24. West wind 10 to 18 mph, with gusts as high as 30 mph.

    High: 24 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow. High near 35. Northeast wind around 6 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow, mainly before 10pm. Low around 22. North wind around 7 mph becoming west after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
M.L.King Day
Mostly sunny, with a high near 33. Wind chill values between 15 and 20. West wind 8 to 17 mph, with gusts as high as 31 mph.
Monday Night
Partly cloudy, with a low around 15. Wind chill values between 5 and 10. West wind 11 to 15 mph, with gusts as high as 29 mph.
Tuesday
Sunny, with a high near 24. West wind 10 to 18 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 14.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 35.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 17.
Sunday
A chance of snow. Partly sunny, with a high near 28.
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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:
10:00 am EST Jan 18, 2026
Forecast Valid:
5pm EST Jan 18, 2026-6pm EST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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