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.

Partly Cloudy

66°F

19°C

Humidity 90%
Wind Speed SW 7 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 23 May 10:56 pm EDT
Extended Forecast for

Ronkonkoma NY

  • Tonight

    Tonight: A 20 percent chance of showers after 2am. Areas of fog after 2am. Otherwise, mostly cloudy, with a low around 61. Southwest wind around 6 mph becoming calm after midnight.

    Low: 61 °F

    Slight Chance
    Showers and
    Areas Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 81. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Southwest wind 5 to 7 mph becoming light and variable after midnight.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 75. Light and variable wind becoming southeast 5 to 9 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before 2am. Partly cloudy, with a low around 57. South wind 5 to 7 mph.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers after 2am. Areas of fog after 2am. Otherwise, mostly cloudy, with a low around 61. Southwest wind around 6 mph becoming calm after midnight.
Friday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 81. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Friday Night
Mostly clear, with a low around 59. Southwest wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Mostly sunny, with a high near 75. Light and variable wind becoming southeast 5 to 9 mph in the morning.
Saturday Night
A 30 percent chance of showers, mainly before 2am. Partly cloudy, with a low around 57. South wind 5 to 7 mph.
Sunday
Partly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 59.
Memorial Day
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 73.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 58.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 69.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Ronkonkoma NY
 40.81°N 73.11°W (Elev. 98 ft)
Last Update:
10:12 pm EDT May 23, 2024
Forecast Valid:
11pm EDT May 23, 2024-6pm EDT May 30, 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