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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.

Overcast

40°F

4°C

Humidity 55%
Wind Speed SW 12 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 22 Jan 5:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Today

    Today: A slight chance of rain and snow before 7am. Mostly sunny, with a high near 44. West wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 26. West wind around 8 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 6 to 14 mph, with gusts as high as 26 mph.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 9. Wind chill values between -5 and 5. Northwest wind 10 to 13 mph, with gusts as high as 26 mph.

    Low: 9 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 18. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: A 50 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 14.

    Low: 14 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow. High near 25. Chance of precipitation is 90%.

    High: 25 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. Low around 18. Chance of precipitation is 80%.

    Low: 18 °F

    Snow

  • Monday

    Monday: A 40 percent chance of snow. Mostly cloudy, with a high near 27.

    High: 27 °F

    Chance Snow

Detailed Forecast

Today
A slight chance of rain and snow before 7am. Mostly sunny, with a high near 44. West wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 26. West wind around 8 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 6 to 14 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 9. Wind chill values between -5 and 5. Northwest wind 10 to 13 mph, with gusts as high as 26 mph.
Saturday
Mostly sunny and cold, with a high near 18. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 14.
Sunday
Snow. High near 25. Chance of precipitation is 90%.
Sunday Night
Snow. Low around 18. Chance of precipitation is 80%.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 27.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Partly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
1:01 am EST Jan 22, 2026
Forecast Valid:
6am EST Jan 22, 2026-6pm EST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation