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.

Light Rain

42°F

6°C

Humidity 89%
Wind Speed N 15 G 24 mph
Barometer 29.56 in (1000.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 13 Nov 11:56 am EST
Extended Forecast for

Bayport NY

Coastal Flood Advisory until November 13, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory until November 13, 03:00pm

    NOW until 3:00pm Fri

    Coastal Flood Advisory

  • This Afternoon

    High: 45 °F

    Rain

  • Tonight

    Tonight: A 30 percent chance of rain before 10pm. Cloudy, with a low around 38. North wind around 11 mph.

    Low: 38 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48. Northwest wind 10 to 14 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37. Northwest wind around 11 mph.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. Northwest wind 11 to 14 mph.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Rain, mainly before 4pm. Steady temperature around 45. North wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.
Tonight
A 30 percent chance of rain before 10pm. Cloudy, with a low around 38. North wind around 11 mph.
Saturday
Mostly sunny, with a high near 48. Northwest wind 10 to 14 mph.
Saturday Night
Partly cloudy, with a low around 37. Northwest wind around 11 mph.
Sunday
Mostly sunny, with a high near 50. Northwest wind 11 to 14 mph.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 57.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bayport NY
 40.73°N 73.04°W (Elev. 0 ft)
Last Update:
5:44 am EST Nov 13, 2026
Forecast Valid:
12pm EST Nov 13, 2026-6pm EST Nov 19, 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