Severe Storms Expected Across Upper Midwest

Strong to severe thunderstorms with damaging winds, large hail, and heavy rain are expected across the Upper Mississippi Valley on Sunday, which includes the Twin Cities metro area. Meanwhile, heavy rain and thunderstorms may produce flooding across the Mid Mississippi Valley and in the St. Louis metro region. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

70°F

21°C

Humidity 97%
Wind Speed SW 3 mph
Barometer 30.13 in (1020.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 9 Aug 3:56 am EDT
Extended Forecast for

Port Jefferson Station NY

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm.  Patchy fog before 10am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.

    Patchy Fog
    then Slight
    Chance
    T-storms

    High: 83 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 70. South wind 6 to 8 mph.

    Partly Cloudy

    Low: 70 °F

  • Monday

    Monday: Mostly sunny, with a high near 88. Southwest wind 5 to 8 mph.

    Mostly Sunny

    High: 88 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 72. South wind 6 to 9 mph.

    Partly Cloudy

    Low: 72 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90. Southwest wind 7 to 10 mph.

    Mostly Sunny

    High: 90 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 73.

    Mostly Clear

    Low: 73 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    Mostly Sunny

    High: 89 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 72.

    Partly Cloudy

    Low: 72 °F

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 86. Chance of precipitation is 40%.

    Chance
    Showers then
    Chance
    T-storms

    High: 86 °F

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 70. South wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 88. Southwest wind 5 to 8 mph.
Monday Night
Partly cloudy, with a low around 72. South wind 6 to 9 mph.
Tuesday
Mostly sunny, with a high near 90. Southwest wind 7 to 10 mph.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 85.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Port Jefferson Station NY
 40.93°N 73.06°W (Elev. 161 ft)
3:14 am EDT Aug 9, 2020
4am EDT Aug 9, 2020-6pm EDT Aug 15, 2020
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database