Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

71°F

22°C

Humidity 90%
Wind Speed SW 9 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 23 Aug 9:56 am EDT
Extended Forecast for

Bayport NY

  • Today

    Today: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 2pm.  Mostly cloudy, then gradually becoming sunny, with a high near 79. South wind 6 to 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • Tonight

    Tonight: Mostly clear, with a low around 64. Southwest wind 5 to 9 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78. Southwest wind 5 to 11 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. West wind around 7 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. West wind 8 to 11 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 2pm.  Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 79. South wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly clear, with a low around 64. Southwest wind 5 to 9 mph.
Monday
Sunny, with a high near 78. Southwest wind 5 to 11 mph.
Monday Night
Mostly clear, with a low around 62. West wind around 7 mph.
Tuesday
Sunny, with a high near 78. West wind 8 to 11 mph.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 80.
Thursday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Bayport NY
 40.76°N 73.07°W (Elev. 30 ft)
3:21 am EDT Aug 23, 2026
10am EDT Aug 23, 2026-6pm EDT Aug 29, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database