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

8°C

46°F

Humidity 93%
Wind Speed N 6 km/h
Barometer 1024.1 mb (30.24 in)
Dewpoint 7°C (44°F)
Visibility 16 km
Last update 4 May 3:56 am EDT
Extended Forecast for

Lake Ronkonkoma NY

  • Today

    Today: Partly sunny, with a high near 16. Northeast wind 8 to 16 km/h becoming southeast in the afternoon.

    High: 16 °C

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 8. East wind around 14 km/h.

    Low: 8 °C

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers, mainly after 2pm. Cloudy, with a high near 13. Southeast wind 13 to 16 km/h.

    High: 13 °C

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly after 8pm. Low around 10. Southeast wind around 14 km/h. Chance of precipitation is 80%. New precipitation amounts between 5 and 7.5 mm possible.

    Low: 10 °C

    Showers

  • Monday

    Monday: Showers likely, mainly before 8am. Cloudy, with a high near 21. Southwest wind 11 to 13 km/h. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm possible.

    High: 21 °C

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 13.

    Low: 13 °C

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 22.

    High: 22 °C

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 12.

    Low: 12 °C

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 19.

    High: 19 °C

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 16. Northeast wind 8 to 16 km/h becoming southeast in the afternoon.
Tonight
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 8. East wind around 14 km/h.
Sunday
A 50 percent chance of showers, mainly after 2pm. Cloudy, with a high near 13. Southeast wind 13 to 16 km/h.
Sunday Night
Showers, mainly after 8pm. Low around 10. Southeast wind around 14 km/h. Chance of precipitation is 80%. New precipitation amounts between 5 and 7.5 mm possible.
Monday
Showers likely, mainly before 8am. Cloudy, with a high near 21. Southwest wind 11 to 13 km/h. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm possible.
Monday Night
Mostly cloudy, with a low around 13.
Tuesday
Partly sunny, with a high near 22.
Tuesday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 12.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 19.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 11.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 18.
Thursday Night
Showers likely. Mostly cloudy, with a low around 11. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 19.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Lake Ronkonkoma NY
 40.83°N 73.11°W (Elev. 98 m)
Last Update:
3:29 am EDT May 4, 2024
Forecast Valid:
4am EDT May 4, 2024-6pm EDT May 10, 2024
 
Forecast Discussion
 
Get as KML Get as XML

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