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

Severe Weather and Excessive Rain from the Southern Plains into the Mississippi Valley

Severe thunderstorms may produce tornadoes, some strong, damaging wind gusts above 70 mph, and very large hail exceeding 2 inches in diameter, and intense rainfall that may cause flash flooding tonight across much of the southern Plains and lower Missouri Valley. The severe thunderstorms and excessive rainfall will expand from east Texas into the Mississippi Valley on Sunday. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain

49°F

9°C

Humidity 77%
Wind Speed SW 8 mph
Barometer 30.37 in (1028.2 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 27 Apr 10:56 pm EDT
Extended Forecast for

Port Jefferson NYSimilar City Names

  • Tonight

    Tonight: Showers likely. Cloudy, with a low around 47. South wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Showers
    Likely

    Low: 47 °F

  • Sunday

    Sunday: A slight chance of showers before 11am, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 67. South wind around 8 mph. Chance of precipitation is 20%.

    Slight Chance
    Showers then
    Partly Sunny

    High: 67 °F

  • Sunday
    Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 55. South wind 3 to 6 mph.

    Chance
    Showers

    Low: 55 °F

  • Monday

    Monday: Mostly sunny, with a high near 79. Northwest wind 6 to 8 mph.

    Mostly Sunny

    High: 79 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 52. East wind 6 to 9 mph.

    Partly Cloudy

    Low: 52 °F

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 61.

    Mostly Cloudy

    High: 61 °F

  • Tuesday
    Night

    Tuesday Night: A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 49.

    Chance
    Showers

    Low: 49 °F

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 60.

    Mostly Cloudy

    High: 60 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 48.

    Partly Cloudy

    Low: 48 °F

Detailed Forecast

Tonight
Showers likely. Cloudy, with a low around 47. South wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A slight chance of showers before 11am, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 67. South wind around 8 mph. Chance of precipitation is 20%.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 55. South wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 79. Northwest wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 52. East wind 6 to 9 mph.
Tuesday
Mostly cloudy, with a high near 61.
Tuesday Night
A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 49.
Wednesday
Mostly cloudy, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Partly sunny, with a high near 65.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52.
Saturday
A 30 percent chance of showers. Mostly cloudy, with a high near 63.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Port Jefferson NYSimilar City Names
 40.95°N 73.05°W (Elev. 151 ft)
Last Update:
11:00 pm EDT Apr 27, 2024
Forecast Valid:
11pm EDT Apr 27, 2024-6pm EDT May 4, 2024
 
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Additional Resources

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Chance of Precipitation