Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fog/Mist

30°F

-1°C

Humidity 96%
Wind Speed Calm
Barometer 30.06 in (1017.9 mb)
Dewpoint 29°F (-2°C)
Visibility 2.50 mi
Last update 18 Jan 3:56 am EST
Extended Forecast for

Bay Shore NY

Winter Weather Advisory January 18, 10:00am until January 19, 04:00am
Click here for hazard details and duration
Winter Weather Advisory
  • Overnight

    Overnight: A chance of rain and snow.  Areas of freezing fog. Cloudy, with a low around 31. Calm wind.  Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow and
    Areas
    Freezing Fog

  • Sunday

    Sunday: Snow, possibly mixed with rain, becoming all snow after 4pm.  Areas of freezing fog before 7am. High near 37. Calm wind becoming northeast 5 to 7 mph in the morning.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow and
    Areas
    Freezing Fog

  • Sunday Night

    Sunday Night: 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. 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.

    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

Overnight
A chance of rain and snow. Areas of freezing fog. Cloudy, with a low around 31. Calm wind. Chance of precipitation is 50%.
Sunday
Snow, possibly mixed with rain, becoming all snow after 4pm. Areas of freezing fog before 7am. High near 37. Calm wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Sunday Night
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. West wind 11 to 15 mph, with gusts as high as 29 mph.
Tuesday
Sunny, with a high near 24.
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%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Bay Shore NY
 40.71°N 73.25°W (Elev. 13 ft)
1:04 am EST Jan 18, 2026
4am EST Jan 18, 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