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.

Fair

48°F

9°C

Humidity 89%
Wind Speed N 7 mph
Barometer 30.19 in (1022.3 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 20 Oct 12:56 am EDT
Extended Forecast for

5 Miles SSE Bayport NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 53. Breezy, with a north wind 20 to 22 mph.

    Low: 53 °F

    Mostly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 64. Breezy, with a north wind 21 to 25 mph.

    High: 64 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. Windy, with a northeast wind 20 to 25 mph increasing to 26 to 31 mph after midnight.

    Low: 50 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59. Windy, with a northeast wind 20 to 30 mph.

    High: 59 °F

    Mostly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. Breezy, with a north wind 21 to 25 mph.

    Low: 50 °F

    Partly Cloudy
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 64. Breezy.

    High: 64 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49. Windy.

    Low: 49 °F

    Mostly Clear
    and Windy

  • Friday

    Friday: Sunny, with a high near 56. Breezy.

    High: 56 °F

    Sunny and
    Breezy then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 53. Breezy, with a north wind 20 to 22 mph.
Tuesday
Partly sunny, with a high near 64. Breezy, with a north wind 21 to 25 mph.
Tuesday Night
Partly cloudy, with a low around 50. Windy, with a northeast wind 20 to 25 mph increasing to 26 to 31 mph after midnight.
Wednesday
Mostly sunny, with a high near 59. Windy, with a northeast wind 20 to 30 mph.
Wednesday Night
Partly cloudy, with a low around 50. Breezy, with a north wind 21 to 25 mph.
Thursday
Sunny, with a high near 64. Breezy.
Thursday Night
Mostly clear, with a low around 49. Windy.
Friday
Sunny, with a high near 56. Breezy.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Bayport NY
 40.68°N 73.02°W (Elev. 0 ft)
Last Update:
2:29 pm EDT Oct 19, 2026
Forecast Valid:
1am EDT Oct 20, 2026-6pm EDT Oct 26, 2026
 
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Additional Resources

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