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.

Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed SW 9 mph
Barometer 29.56 in (1001.0 mb)
Dewpoint 47°F (8°C)
Visibility 2.50 mi
Wind Chill44°F (7°C)
Last update 12 Mar 7:56 am EDT
Extended Forecast for

Bay Shore NY

  • Today

    Today: Rain before 5pm, then snow, possibly mixed with rain. Temperature falling to around 40 by 5pm. Breezy, with a northwest wind 8 to 13 mph increasing to 18 to 23 mph in the morning. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 49 °F⇓

    Chance Rain
    and Breezy
    then
    Rain/Snow

  • Tonight

    Tonight: Snow, possibly mixed with rain before 8pm. Low around 30. Northwest wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 46. Light and variable wind becoming south 10 to 15 mph in the morning.

    High: 46 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. South wind 11 to 14 mph, with gusts as high as 29 mph.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 50. West wind around 14 mph, with gusts as high as 28 mph.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 33.

    Low: 33 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, with a high near 48.

    High: 48 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 41. Chance of precipitation is 80%.

    Low: 41 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 55. Breezy. Chance of precipitation is 90%.

    High: 55 °F

    Rain and
    Breezy

Detailed Forecast

Today
Rain before 5pm, then snow, possibly mixed with rain. Temperature falling to around 40 by 5pm. Breezy, with a northwest wind 8 to 13 mph increasing to 18 to 23 mph in the morning. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tonight
Snow, possibly mixed with rain before 8pm. Low around 30. Northwest wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
Increasing clouds, with a high near 46. Light and variable wind becoming south 10 to 15 mph in the morning.
Friday Night
Partly cloudy, with a low around 37. South wind 11 to 14 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 50. West wind around 14 mph, with gusts as high as 28 mph.
Saturday Night
Increasing clouds, with a low around 33.
Sunday
Cloudy, with a high near 48.
Sunday Night
Rain, mainly after 2am. Low around 41. Chance of precipitation is 80%.
Monday
Rain. High near 55. Breezy. Chance of precipitation is 90%.
Monday Night
Rain likely, mainly before 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of rain. Mostly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 39.
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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:
7:04 am EDT Mar 12, 2026
Forecast Valid:
8am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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