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Heavy Rain and Potential for Flash Flooding for Mid-Atlantic

An unseasonably strong storm system will bring heavy rain to the Mid-Atlantic and central Appalachians Friday into Saturday. Flash flooding and widespread lowland flooding are possible during this period. Meanwhile, monsoon moisture will continue to produce heavy rain with the possibility of localized flash flooding in the Desert Southwest through the southern/central Rockies and High Plains. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

81°F

27°C

Humidity 67%
Wind Speed N 6 mph
Barometer 29.85 in (1010.7 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 28 Jul 10:56 am EDT
Extended Forecast for

Port Jefferson NY

  • Today

    Today: Partly sunny, with a high near 82. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

    Partly Sunny

    High: 82 °F

  • Tonight

    Tonight: A slight chance of light rain before 9pm, then rain likely, mainly after midnight.  Cloudy, with a low around 68. Northeast wind 5 to 10 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Chance Rain
    then Rain
    Likely

    Low: 68 °F

  • Saturday

    Saturday: Rain likely, mainly before 10am.  Cloudy, with a high near 73. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 33 mph.  Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Rain Likely
    and Breezy

    High: 73 °F

  • Saturday
    Night

    Saturday Night: A chance of rain before 10pm, then a slight chance of light rain after 10pm.  Mostly cloudy, with a low around 60. Northeast wind 15 to 17 mph.  Chance of precipitation is 30%.

    Chance Rain

    Low: 60 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 79. Northeast wind 8 to 16 mph.

    Mostly Sunny

    High: 79 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 64.

    Mostly Cloudy

    Low: 64 °F

  • Monday

    Monday: Partly sunny, with a high near 77.

    Partly Sunny

    High: 77 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 66.

    Mostly Cloudy

    Low: 66 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    Mostly Sunny

    High: 82 °F

Detailed Forecast

Today
Partly sunny, with a high near 82. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.
Tonight
A slight chance of light rain before 9pm, then rain likely, mainly after midnight. Cloudy, with a low around 68. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain likely, mainly before 10am. Cloudy, with a high near 73. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A chance of rain before 10pm, then a slight chance of light rain after 10pm. Mostly cloudy, with a low around 60. Northeast wind 15 to 17 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 79. Northeast wind 8 to 16 mph.
Sunday Night
Mostly cloudy, with a low around 64.
Monday
Partly sunny, with a high near 77.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
Mostly sunny, with a high near 85.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
10:34 am EDT Jul 28, 2017
11am EDT Jul 28, 2017-6pm EDT Aug 3, 2017
 
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Additional Resources

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