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.

Mostly Cloudy

30°F

-1°C

Humidity 45%
Wind Speed SW 10 G 22 mph
Barometer 30.40 in (1029.5 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 21 Jan 1:56 pm EST
Extended Forecast for

Bay Shore NY

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 40. Wind chill values between 25 and 30. South wind 11 to 13 mph, with gusts as high as 23 mph.

    High: 40 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of rain before 9pm, then a slight chance of snow between 9pm and 1am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 38. Southwest wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 44. West wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. Wind chill values between 20 and 25. West wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 36. West wind 8 to 14 mph, with gusts as high as 25 mph.

    High: 36 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: Snow likely after 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.

    Low: 12 °F

    Mostly Cloudy
    then Snow
    Likely

  • Sunday

    Sunday: Snow. High near 26. Chance of precipitation is 90%.

    High: 26 °F

    Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 40. Wind chill values between 25 and 30. South wind 11 to 13 mph, with gusts as high as 23 mph.
Tonight
A slight chance of rain before 9pm, then a slight chance of snow between 9pm and 1am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 38. Southwest wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 44. West wind 10 to 15 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 26. Wind chill values between 20 and 25. West wind 8 to 10 mph, with gusts as high as 21 mph.
Friday
Partly sunny, with a high near 36. West wind 8 to 14 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 11.
Saturday
Partly sunny and cold, with a high near 18.
Saturday Night
Snow likely after 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.
Sunday
Snow. High near 26. Chance of precipitation is 90%.
Sunday Night
Snow. Low around 19. Chance of precipitation is 80%.
Monday
A 50 percent chance of snow. Mostly cloudy, with a high near 28.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
Sunny, with a high near 24.
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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:
12:34 pm EST Jan 21, 2026
Forecast Valid:
2pm EST Jan 21, 2026-6pm EST Jan 27, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation