Heavy Rainfall and Flash Flood Threats Shift From Southern Plains to Lower Mississippi Valley; Elevated to Critical Fire Concerns Out West

Heavy to excessive rainfall with flash flood concerns will shift from the southern Plains into the Lower Mississippi Valley. Elevated to Critical Fire weather threats will linger through the weekend across the Great Basin and central Rockies. Finally, Major to Record river flooding will continue in portions of the Midwest and across parts of North and South Carolina this weekend. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

71°F

22°C

Humidity 87%
Wind Speed S 14 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 21 Sep 8:56 pm EDT
Extended Forecast for

Islip NY

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 3am.  Mostly cloudy, with a steady temperature around 67. Southwest wind around 17 mph.

    Mostly Cloudy
    then Chance
    Showers

    Low: 67 °F

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 7am.  Mostly cloudy, then gradually becoming sunny, with a high near 74. North wind 10 to 14 mph.

    Chance
    Showers then
    Mostly Sunny

    High: 74 °F

  • Saturday
    Night

    Saturday Night: Mostly cloudy, with a low around 57. Northeast wind 5 to 7 mph.

    Mostly Cloudy

    Low: 57 °F

  • Sunday

    Sunday: Partly sunny, with a high near 71. Northeast wind 5 to 7 mph becoming northwest in the afternoon.

    Partly Sunny

    High: 71 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 55. Calm wind becoming northeast 5 to 7 mph after midnight.

    Partly Cloudy

    Low: 55 °F

  • Monday

    Monday: Partly sunny, with a high near 69.

    Partly Sunny

    High: 69 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 59.

    Mostly Cloudy

    Low: 59 °F

  • Tuesday

    Tuesday: Showers likely after noon.  Cloudy, with a high near 72. Chance of precipitation is 60%.

    Cloudy then
    Showers
    Likely

    High: 72 °F

  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 66.

    Chance
    Showers

    Low: 66 °F

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a steady temperature around 67. Southwest wind around 17 mph.
Saturday
A 30 percent chance of showers, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 74. North wind 10 to 14 mph.
Saturday Night
Mostly cloudy, with a low around 57. Northeast wind 5 to 7 mph.
Sunday
Partly sunny, with a high near 71. Northeast wind 5 to 7 mph becoming northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 55. Calm wind becoming northeast 5 to 7 mph after midnight.
Monday
Partly sunny, with a high near 69.
Monday Night
Mostly cloudy, with a low around 59.
Tuesday
Showers likely after noon. Cloudy, with a high near 72. Chance of precipitation is 60%.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Thursday
Partly sunny, with a high near 74.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 73.
Click Map For Forecast
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
5:59 pm EDT Sep 21, 2018
9pm EDT Sep 21, 2018-6pm EDT Sep 28, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database