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.

Mostly Cloudy

62°F

17°C

Humidity 60%
Wind Speed SW 15 G 30 mph
Barometer 29.71 in (1006.0 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 5 Nov 3:56 pm EST
Extended Forecast for

Lake Ronkonkoma NY

Wind Advisory November 5, 09:00pm until November 6, 08:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: A chance of showers between 10pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Breezy, with a southwest wind 14 to 24 mph becoming northwest after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 30%.

    Low: 43 °F

    Breezy.
    Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 54. Northwest wind 13 to 17 mph, with gusts as high as 38 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 2am. Otherwise, mostly clear, with a low around 35. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Friday

    Friday: Partly sunny, with a high near 61. Light south wind increasing to 10 to 15 mph in the morning.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Cloudy, with a low around 52. South wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.

    High: 62 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

Detailed Forecast

Tonight
A chance of showers between 10pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Breezy, with a southwest wind 14 to 24 mph becoming northwest after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 54. Northwest wind 13 to 17 mph, with gusts as high as 38 mph.
Thursday Night
Areas of frost after 2am. Otherwise, mostly clear, with a low around 35. Northwest wind 5 to 9 mph becoming calm after midnight.
Friday
Partly sunny, with a high near 61. Light south wind increasing to 10 to 15 mph in the morning.
Friday Night
Rain likely, mainly after 1am. Cloudy, with a low around 52. South wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 32.
Veterans Day
Mostly sunny, with a high near 47.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Ronkonkoma NY
 40.83°N 73.11°W (Elev. 98 ft)
Last Update:
12:56 pm EST Nov 5, 2025
Forecast Valid:
4pm EST Nov 5, 2025-6pm EST Nov 12, 2025
 
Forecast Discussion
 
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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