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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Today

    Today: A 20 percent chance of rain after 4pm. Increasing clouds, with a high near 40. Wind chill values between 15 and 25. Northwest wind 5 to 8 mph becoming southwest in the afternoon.

    High: 40 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Temperature rising to around 45 by 4am. South wind 6 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F⇑

    Rain

  • Monday

    Monday: Rain, mainly after 7am. High near 54. Southwest wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain

  • Monday Night

    Monday Night: Mostly cloudy during the early evening, then becoming mostly clear, with a low around 26. Wind chill values between 15 and 20. Breezy, with a west wind 18 to 21 mph, with gusts as high as 36 mph.

    Low: 26 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 35. Breezy, with a west wind 20 to 23 mph, with gusts as high as 41 mph.

    High: 35 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 30 percent chance of snow. Partly sunny, with a high near 35.

    High: 35 °F

    Chance Snow

Detailed Forecast

Today
A 20 percent chance of rain after 4pm. Increasing clouds, with a high near 40. Wind chill values between 15 and 25. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Tonight
Rain, mainly before 4am. Temperature rising to around 45 by 4am. South wind 6 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, mainly after 7am. High near 54. Southwest wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly cloudy during the early evening, then becoming mostly clear, with a low around 26. Wind chill values between 15 and 20. Breezy, with a west wind 18 to 21 mph, with gusts as high as 36 mph.
Tuesday
Mostly cloudy, with a high near 35. Breezy, with a west wind 20 to 23 mph, with gusts as high as 41 mph.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 25.
New Year's Day
A 30 percent chance of snow. Partly sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 32.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.81°N 73.11°W (Elev. 98 ft)
Last Update:
1:17 am EST Dec 28, 2025
Forecast Valid:
4am EST Dec 28, 2025-6pm EST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation