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.

A Few Clouds

46°F

8°C

Humidity 86%
Wind Speed W 6 mph
Barometer 29.77 in (1007.9 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 11 Mar 11:56 pm EDT
Extended Forecast for

Bayport NY

  • Overnight

    Overnight: Partly cloudy, with a low around 39. West wind 5 to 7 mph becoming north.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50. North wind 7 to 10 mph becoming east in the afternoon.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 37. East wind around 8 mph.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, with a high near 46. East wind 6 to 10 mph.

    High: 46 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 36. Northeast wind 3 to 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 52.

    High: 52 °F

    Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Cloudy then
    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 39. West wind 5 to 7 mph becoming north.
Wednesday
Partly sunny, with a high near 50. North wind 7 to 10 mph becoming east in the afternoon.
Wednesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 37. East wind around 8 mph.
Thursday
Mostly cloudy, with a high near 46. East wind 6 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 36. Northeast wind 3 to 5 mph.
Friday
Mostly cloudy, with a high near 49.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Cloudy, with a high near 52.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 45.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 57. Breezy.
Sunday Night
Showers. Low around 44. Chance of precipitation is 80%.
Monday
Showers likely. Mostly cloudy, with a high near 53. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 35.
Tuesday
Sunny, with a high near 53.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Bayport NY
 40.76°N 73.07°W (Elev. 30 ft)
Last Update:
10:35 pm EDT Mar 11, 2025
Forecast Valid:
12am EDT Mar 12, 2025-6pm EDT Mar 18, 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