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

32°F

0°C

Humidity 66%
Wind Speed SW 3 mph
Barometer 29.91 in (1012.8 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 13 Jan 8:56 pm EST
Extended Forecast for

Ronkonkoma NY

  • Tonight

    Tonight: Clear, with a low around 24. Wind chill values between 15 and 20. West wind 5 to 11 mph, with gusts as high as 22 mph.

    Low: 24 °F

    Clear

  • Tuesday

    Tuesday: A 20 percent chance of snow showers after 3pm. Increasing clouds, with a high near 33. Wind chill values between 10 and 20. Breezy, with a west wind 14 to 21 mph.

    High: 33 °F

    Breezy. Sunny
    then Slight
    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 21. Wind chill values between 5 and 15. West wind around 18 mph, with gusts as high as 31 mph.

    Low: 21 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 35. Wind chill values between 5 and 15. Northwest wind around 17 mph, with gusts as high as 29 mph.

    High: 35 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. Northwest wind 9 to 13 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 25.

    Low: 25 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 24. Wind chill values between 15 and 20. West wind 5 to 11 mph, with gusts as high as 22 mph.
Tuesday
A 20 percent chance of snow showers after 3pm. Increasing clouds, with a high near 33. Wind chill values between 10 and 20. Breezy, with a west wind 14 to 21 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 21. Wind chill values between 5 and 15. West wind around 18 mph, with gusts as high as 31 mph.
Wednesday
Sunny, with a high near 35. Wind chill values between 5 and 15. Northwest wind around 17 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly clear, with a low around 20. Northwest wind 9 to 13 mph.
Thursday
Partly sunny, with a high near 34.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 25.
Friday
Sunny, with a high near 42.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Showers likely, mainly after 1pm. Partly sunny, with a high near 46. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 41.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24.
M.L.King Day
A 30 percent chance of snow showers. Mostly sunny, with a high near 34.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Ronkonkoma NY
 40.81°N 73.11°W (Elev. 98 ft)
Last Update:
9:17 pm EST Jan 13, 2025
Forecast Valid:
9pm EST Jan 13, 2025-6pm EST Jan 20, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation