Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

34°F

1°C

Humidity 89%
Wind Speed W 8 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 17 Jan 5:56 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
  • Tonight

    Tonight: A slight chance of rain between 1am and 4am, then a chance of snow.  Mostly cloudy, with a low around 31. West wind 5 to 7 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. Wind chill values between 15 and 25. 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. West wind 11 to 14 mph, with gusts as high as 28 mph.

    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

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain between 1am and 4am, then a chance of snow. Mostly cloudy, with a low around 31. West wind 5 to 7 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. Wind chill values between 15 and 25. West wind 8 to 14 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 17. West wind 11 to 14 mph, with gusts as high as 28 mph.
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.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Partly sunny, with a high near 33.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Bay Shore NY
 40.71°N 73.25°W (Elev. 13 ft)
5:41 pm EST Jan 17, 2026
6pm EST Jan 17, 2026-6pm EST Jan 24, 2026
 
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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