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.

Overcast

77°F

25°C

Humidity 79%
Wind Speed S 6 mph
Barometer 29.52 in (999.5 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Jun 3:56 pm EDT
Extended Forecast for

Lake Ronkonkoma NY

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a steady temperature around 76. Southwest wind around 9 mph. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 64. West wind 3 to 8 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82. Northwest wind 5 to 11 mph becoming southwest in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming clear, with a low around 61. West wind 7 to 9 mph.

    Low: 61 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 79. West wind 9 to 13 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Cloudy, with a steady temperature around 76. Southwest wind around 9 mph. Chance of precipitation is 70%.
Tonight
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 64. West wind 3 to 8 mph. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 82. Northwest wind 5 to 11 mph becoming southwest in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming clear, with a low around 61. West wind 7 to 9 mph.
Saturday
Sunny, with a high near 79. West wind 9 to 13 mph.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 79.
Sunday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
A chance of showers. Mostly sunny, with a high near 81.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Lake Ronkonkoma NY
 40.83°N 73.14°W (Elev. 98 ft)
Last Update:
3:10 pm EDT Jun 6, 2024
Forecast Valid:
5pm EDT Jun 6, 2024-6pm EDT Jun 13, 2024
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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