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.

Partly Cloudy

49°F

9°C

Humidity 50%
Wind Speed N 5 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 20 Nov 12:56 pm EST
Extended Forecast for

Bay Shore NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 47. North wind around 5 mph becoming calm.

    High: 47 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 37. Calm wind.

    Low: 37 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 54. Light west wind becoming southwest 5 to 10 mph in the morning.

    High: 54 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 42. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain Likely
    and Patchy
    Fog

  • Saturday

    Saturday: A 40 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 51. North wind 7 to 11 mph.

    High: 51 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 47. North wind around 5 mph becoming calm.
Tonight
Increasing clouds, with a low around 37. Calm wind.
Friday
Mostly cloudy, with a high near 54. Light west wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Rain likely, mainly after 1am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 42. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 40 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 51. North wind 7 to 11 mph.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
A 30 percent chance of rain. Cloudy, with a high near 56.
Tuesday Night
Rain. Low around 48. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
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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:
12:38 pm EST Nov 20, 2025
Forecast Valid:
1pm EST Nov 20, 2025-6pm EST Nov 26, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation