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.

Fog/Mist

49°F

9°C

Humidity 97%
Wind Speed NW 16 mph
Barometer 29.79 in (1008.7 mb)
Dewpoint 48°F (9°C)
Visibility 1.50 mi
Wind Chill43°F (6°C)
Last update 19 Apr 10:56 am EDT
Extended Forecast for

Bay Shore NY

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Today

    Today: Showers, mainly before 5pm. Temperature falling to around 47 by 5pm. Breezy, with a northwest wind 14 to 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F⇓

    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 41. Northwest wind 5 to 8 mph.

    Low: 41 °F

    Gradual
    Clearing

  • Monday

    Monday: A 30 percent chance of showers. Partly sunny, with a high near 52. Northwest wind 6 to 10 mph.

    High: 52 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. North wind around 9 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 51. North wind around 7 mph becoming southwest in the afternoon.

    High: 51 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 41.

    Low: 41 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Showers, mainly before 5pm. Temperature falling to around 47 by 5pm. Breezy, with a northwest wind 14 to 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 41. Northwest wind 5 to 8 mph.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 52. Northwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 34. North wind around 9 mph.
Tuesday
Sunny, with a high near 51. North wind around 7 mph becoming southwest in the afternoon.
Tuesday Night
Increasing clouds, with a low around 41.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 46.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 59.
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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:
10:15 am EDT Apr 19, 2026
Forecast Valid:
11am EDT Apr 19, 2026-6pm EDT Apr 25, 2026
 
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