National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

One More Day of Heat with Severe Storms and Heavy Rain

One more day of early-season heat will grip the Northeastern U.S. today from New England to the Mid-Atlantic. A few more record highs are possible and heat advisories remain in effect from Boston to Philadelphia. Also, a cold front arriving into the East may produce strong to severe storms and heavy rain, which may result in flash flooding, from New England to the Southeast and Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

80°F

27°C

Humidity 67%
Wind Speed SW 10 G 20 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 22 May 1:56 pm EDT
Extended Forecast for

Lake Ronkonkoma NY

  • This
    Afternoon

    This Afternoon: Sunny, with a high near 84. South wind around 10 mph, with gusts as high as 20 mph.

    Sunny

    High: 84 °F

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 11pm. Increasing clouds, with a low around 59. Southwest wind 7 to 11 mph becoming north after midnight.

    Chance
    T-storms

    Low: 59 °F

  • Monday

    Monday: Partly sunny, with a high near 73. North wind 6 to 10 mph.

    Partly Sunny

    High: 73 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 55. North wind around 5 mph becoming light and variable in the evening.

    Mostly Cloudy

    Low: 55 °F

  • Tuesday

    Tuesday: Partly sunny, with a high near 68. East wind around 10 mph.

    Partly Sunny

    High: 68 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 52.

    Mostly Cloudy

    Low: 52 °F

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 67.

    Mostly Cloudy

    High: 67 °F

  • Wednesday
    Night

    Wednesday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 55.

    Mostly Cloudy
    then Chance
    Showers

    Low: 55 °F

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 70.

    Chance
    Showers

    High: 70 °F

Detailed Forecast

This Afternoon
Sunny, with a high near 84. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Increasing clouds, with a low around 59. Southwest wind 7 to 11 mph becoming north after midnight.
Monday
Partly sunny, with a high near 73. North wind 6 to 10 mph.
Monday Night
Mostly cloudy, with a low around 55. North wind around 5 mph becoming light and variable in the evening.
Tuesday
Partly sunny, with a high near 68. East wind around 10 mph.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly cloudy, with a high near 67.
Wednesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 55.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 70.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 59.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 73.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 74.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Lake Ronkonkoma NY
 40.83°N 73.11°W (Elev. 98 ft)
Last Update:
11:12 am EDT May 22, 2022
Forecast Valid:
2pm EDT May 22, 2022-6pm EDT May 28, 2022
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation