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.

Overcast

65°F

18°C

Humidity 87%
Wind Speed NE 8 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 16 Jun 9:56 pm EDT
Extended Forecast for

Bayport NY

  • Tonight

    Tonight: A slight chance of showers before midnight, then a slight chance of drizzle or light rain after 2am. Patchy fog after 2am. Otherwise, cloudy, with a low around 64. East wind 5 to 8 mph. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after noon. Patchy fog before noon. Otherwise, cloudy, with a high near 69. East wind 6 to 8 mph.

    High: 69 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers. Areas of fog. Otherwise, cloudy, with a low around 63. South wind 3 to 6 mph.

    Low: 63 °F

    Chance
    Showers and
    Areas Fog

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 75. South wind 5 to 9 mph. Chance of precipitation is 30%.

    High: 75 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Southwest wind around 6 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers between 8pm and 2am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers before midnight, then a slight chance of drizzle or light rain after 2am. Patchy fog after 2am. Otherwise, cloudy, with a low around 64. East wind 5 to 8 mph. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers, mainly after noon. Patchy fog before noon. Otherwise, cloudy, with a high near 69. East wind 6 to 8 mph.
Tuesday Night
A 40 percent chance of showers. Areas of fog. Otherwise, cloudy, with a low around 63. South wind 3 to 6 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 75. South wind 5 to 9 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Southwest wind around 6 mph. Chance of precipitation is 40%.
Juneteenth
Mostly sunny, with a high near 80.
Thursday Night
A chance of showers between 8pm and 2am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 81.
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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:
9:32 pm EDT Jun 16, 2025
Forecast Valid:
10pm EDT Jun 16, 2025-6pm EDT Jun 23, 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