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.

A Few Clouds

27°F

-3°C

Humidity 49%
Wind Speed NW 20 G 31 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 15 Jan 8:56 am EST
Extended Forecast for

Islip NY

  • Today

    Today: Sunny, with a high near 33. Wind chill values between 15 and 20. Breezy, with a northwest wind 17 to 20 mph.

    High: 33 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 20. Wind chill values between 10 and 15. Northwest wind 6 to 13 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 33. Wind chill values between 15 and 25. Southwest wind 5 to 9 mph.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers before 4am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind around 6 mph.

    Low: 23 °F

    Slight Chance
    Snow Showers

  • Friday

    Friday: Sunny, with a high near 38. Northwest wind 6 to 8 mph.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Rain likely after 1pm. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.

    High: 47 °F

    Mostly Cloudy
    then Rain
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain and snow after 1pm. Partly sunny, with a high near 41. Chance of precipitation is 40%.

    High: 41 °F

    Partly Sunny
    then Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 33. Wind chill values between 15 and 20. Breezy, with a northwest wind 17 to 20 mph.
Tonight
Mostly clear, with a low around 20. Wind chill values between 10 and 15. Northwest wind 6 to 13 mph.
Thursday
Partly sunny, with a high near 33. Wind chill values between 15 and 25. Southwest wind 5 to 9 mph.
Thursday Night
A 20 percent chance of snow showers before 4am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind around 6 mph.
Friday
Sunny, with a high near 38. Northwest wind 6 to 8 mph.
Friday Night
Mostly clear, with a low around 30.
Saturday
Rain likely after 1pm. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 31.
Sunday
A chance of rain and snow after 1pm. Partly sunny, with a high near 41. Chance of precipitation is 40%.
Sunday Night
A 50 percent chance of snow before 1am. Mostly cloudy, with a low around 19.
M.L.King Day
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 22.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
Last Update:
6:00 am EST Jan 15, 2025
Forecast Valid:
9am EST Jan 15, 2025-6pm EST Jan 21, 2025
 
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Additional Resources

Radar & Satellite Image

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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