National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

55°F

13°C

Humidity 93%
Wind Speed N 12 mph
Barometer 29.77 in (1008.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 12 Oct 1:56 am EDT
Extended Forecast for

Bayport NY

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Cloudy, with a low around 56. North wind around 10 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Chance
    T-storms

  • Columbus Day

    Columbus Day: A 30 percent chance of showers and thunderstorms before 8am. Cloudy through mid morning, then gradual clearing, with a high near 70. North wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 70 °F

    Chance
    T-storms then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. Light north wind.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 69. Calm wind becoming southeast 5 to 9 mph in the morning.

    High: 69 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 63. Southwest wind around 10 mph, with gusts as high as 22 mph.

    Low: 63 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 2am. Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Cloudy, with a low around 56. North wind around 10 mph, with gusts as high as 21 mph.
Columbus Day
A 30 percent chance of showers and thunderstorms before 8am. Cloudy through mid morning, then gradual clearing, with a high near 70. North wind 8 to 11 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 56. Light north wind.
Tuesday
Increasing clouds, with a high near 69. Calm wind becoming southeast 5 to 9 mph in the morning.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 63. Southwest wind around 10 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Mostly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
A 50 percent chance of showers after 2am. Partly cloudy, with a low around 54.
Friday
Showers, mainly after 8am. High near 69. Chance of precipitation is 80%.
Friday Night
Showers likely. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 55. Breezy.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bayport NY
 40.76°N 73.07°W (Elev. 30 ft)
Last Update:
2:35 am EDT Oct 12, 2026
Forecast Valid:
3am EDT Oct 12, 2026-6pm EDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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