Mid-South Flash Flood Threat; California, Central Great Basin, and Plains Fire Weather Risks

Heavy rain from Nicholas remnants may produce flash flooding across the mid-south. The first fall storm of the season is producing rain, high elevation mountain snow, and cold temperatures in the Northwest; and critical fire weather threats for California, the Great Basin, and the Colorado Front Range. An early arctic front may produce the first freeze and areas of snow for much of Alaska Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

67°F

19°C

Humidity 76%
Wind Speed Calm
Barometer 30.18 in (1022.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 19 Sep 7:56 pm EDT
Extended Forecast for

Port Jefferson NY

  • Tonight

    Tonight: Mostly clear, with a low around 60. Southeast wind around 6 mph.

    Mostly Clear

    Low: 60 °F

  • Monday

    Monday: Sunny, with a high near 73. East wind 6 to 10 mph.

    Sunny

    High: 73 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 64. Southeast wind around 10 mph.

    Mostly Clear

    Low: 64 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Southeast wind 9 to 11 mph.

    Mostly Sunny

    High: 74 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 68. Southeast wind around 10 mph.

    Mostly Cloudy

    Low: 68 °F

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 76.

    Mostly Cloudy

    High: 76 °F

  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers after 2am.  Mostly cloudy, with a low around 70.

    Mostly Cloudy
    then Chance
    Showers

    Low: 70 °F

  • Thursday

    Thursday: A 40 percent chance of showers.  Mostly cloudy, with a high near 75.

    Chance
    Showers

    High: 75 °F

  • Thursday
    Night

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

    Chance
    Showers

    Low: 66 °F

Detailed Forecast

Tonight
Mostly clear, with a low around 60. Southeast wind around 6 mph.
Monday
Sunny, with a high near 73. East wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 64. Southeast wind around 10 mph.
Tuesday
Mostly sunny, with a high near 74. Southeast wind 9 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 68. Southeast wind around 10 mph.
Wednesday
Mostly cloudy, with a high near 76.
Wednesday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 70.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 75.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 66.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 72.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.96°N 73.08°W (Elev. 3 ft)
5:43 pm EDT Sep 19, 2021
8pm EDT Sep 19, 2021-6pm EDT Sep 26, 2021
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database