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.

Light Snow Fog/Mist

30°F

-1°C

Humidity 92%
Wind Speed NE 9 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 28°F (-2°C)
Visibility 1.50 mi
Wind Chill22°F (-6°C)
Last update 16 Feb 1:56 am EST
Extended Forecast for

Bay Shore NY

  • Overnight

    Overnight: Snow, mainly before 4am. Low around 31. Wind chill values between 25 and 30. Northeast wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.

    Low: 31 °F

    Snow

  • Washington's Birthday

    Washington's Birthday: A 30 percent chance of snow before 7am. Cloudy through mid morning, then gradual clearing, with a high near 39. Wind chill values between 20 and 30. Northeast wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 39 °F

    Chance Snow
    then Mostly
    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow after 4am. Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 41. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 41 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 32. Calm wind.

    Low: 32 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Rain likely. Cloudy, with a high near 41. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Thursday

    Thursday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

Detailed Forecast

Overnight
Snow, mainly before 4am. Low around 31. Wind chill values between 25 and 30. Northeast wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.
Washington's Birthday
A 30 percent chance of snow before 7am. Cloudy through mid morning, then gradual clearing, with a high near 39. Wind chill values between 20 and 30. Northeast wind 6 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of snow after 4am. Mostly cloudy, with a low around 29. Calm wind.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 41. Calm wind becoming southwest 5 to 7 mph in the morning.
Tuesday Night
Increasing clouds, with a low around 32. Calm wind.
Wednesday
Rain likely. Cloudy, with a high near 41. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Thursday
Mostly cloudy, with a high near 41.
Thursday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Friday
Rain likely. Mostly cloudy, with a high near 41. Chance of precipitation is 70%.
Friday Night
A chance of rain and snow. Cloudy, with a low around 31. Chance of precipitation is 50%.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 41.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 29.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bay Shore NY
 40.71°N 73.25°W (Elev. 13 ft)
Last Update:
2:01 am EST Feb 16, 2026
Forecast Valid:
2am EST Feb 16, 2026-6pm EST Feb 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation