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 and Breezy

50°F

10°C

Humidity 29%
Wind Speed NW 22 G 33 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 14 Mar 1:56 pm EDT
Extended Forecast for

Bayport NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 50. Breezy, with a west wind around 21 mph, with gusts as high as 40 mph.

    High: 50 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 32. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 32 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 47. Northeast wind 5 to 11 mph becoming southeast in the afternoon.

    High: 47 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers after 2am. Low around 39. Southeast wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Mostly Cloudy
    then Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 56. Breezy, with a south wind 18 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 56 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 33. Windy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 33 °F

    Heavy Rain
    and Windy

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 41.

    High: 41 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 50. Breezy, with a west wind around 21 mph, with gusts as high as 40 mph.
Tonight
Increasing clouds, with a low around 32. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Sunday
Partly sunny, with a high near 47. Northeast wind 5 to 11 mph becoming southeast in the afternoon.
Sunday Night
Showers after 2am. Low around 39. Southeast wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 56. Breezy, with a south wind 18 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 33. Windy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 41.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Mostly sunny, with a high near 43.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bayport NY
 40.76°N 73.07°W (Elev. 30 ft)
Last Update:
2:22 pm EDT Mar 14, 2026
Forecast Valid:
2pm EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation