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

A Powerful Storm System To Impact the Southern Plains to the Gulf Coast

A vigorous storm system will develop over the southern Plains and deliver several threats on Thursday. Strong winds are expected across the region along with fire weather concerns from southeast New Mexico to south Texas. A marginal risk of severe storms and excessive rain from the ArkLaTex to the central Gulf Coast. Even a few inches of snow will be possible in Texas, including just west of DFW. Read More >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

30°F

-1°C

Humidity 61%
Wind Speed NE 9 mph
Barometer 30.34 in (1027.4 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 13 Dec 3:56 am EST
Extended Forecast for

Lake Ronkonkoma NY

  • Today

    Today: Snow likely before 10am, then rain and snow likely between 10am and 11am, then rain likely after 11am. Mostly cloudy, with a high near 40. Wind chill values between 20 and 30. East wind around 10 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    Rain/Snow
    Likely then
    Rain Likely

    High: 40 °F

  • Tonight

    Tonight: A 30 percent chance of light rain before 10pm. Mostly cloudy, with a low around 37. East wind 8 to 10 mph.

    Chance Light
    Rain then
    Mostly Cloudy

    Low: 37 °F

  • Friday

    Friday: A 20 percent chance of rain after 3pm. Partly sunny, with a high near 50. Southeast wind around 8 mph.

    Partly Sunny
    then Slight
    Chance Rain

    High: 50 °F

  • Friday
    Night

    Friday Night: Rain, mainly after 9pm. Steady temperature around 46. Southeast wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    Low: 46 °F

  • Saturday

    Saturday: Rain likely, mainly before noon. Cloudy, with a high near 51. Light and variable wind becoming northeast 5 to 10 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Rain Likely

    High: 51 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 37.

    Chance
    Showers

    Low: 37 °F

  • Sunday

    Sunday: A chance of rain before noon, then a chance of showers after noon. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.

    Chance Rain

    High: 45 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 34.

    Chance
    Showers

    Low: 34 °F

  • Monday

    Monday: Partly sunny, with a high near 45.

    Partly Sunny

    High: 45 °F

Detailed Forecast

Today
Snow likely before 10am, then rain and snow likely between 10am and 11am, then rain likely after 11am. Mostly cloudy, with a high near 40. Wind chill values between 20 and 30. East wind around 10 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 30 percent chance of light rain before 10pm. Mostly cloudy, with a low around 37. East wind 8 to 10 mph.
Friday
A 20 percent chance of rain after 3pm. Partly sunny, with a high near 50. Southeast wind around 8 mph.
Friday Night
Rain, mainly after 9pm. Steady temperature around 46. Southeast wind 3 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Rain likely, mainly before noon. Cloudy, with a high near 51. Light and variable wind becoming northeast 5 to 10 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 37.
Sunday
A chance of rain before noon, then a chance of showers after noon. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 45.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Sunny, with a high near 41.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Lake Ronkonkoma NY
 40.83°N 73.11°W (Elev. 98 ft)
Last Update:
3:25 am EST Dec 13, 2018
Forecast Valid:
4am EST Dec 13, 2018-6pm EST Dec 19, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic 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