Temperatures Well Above Normal in the Southwest & California; Snow Possible in the Northern Plains

Much above average temperatures will continue from California, through the Southwest and into the Great Basin, with poor air quality due to ongoing wildfires. Elsewhere, a slow-moving storm over the Northern High Plains will reach the Upper Great Lakes by Wednesday. This system will produce areas of snow, rain, and freezing rain. Rainy weather will also continue over parts of Florida. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

56°F

13°C

Humidity 97%
Wind Speed SE 5 mph
Barometer 30.28 in (1025.2 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 20 Oct 12:56 am EDT
Extended Forecast for

Port Jefferson NY

  • Overnight

    Overnight: A 30 percent chance of showers after 2am.  Mostly cloudy, with a low around 55. Light southeast wind.

    Chance
    Showers

    Low: 55 °F

  • Tuesday

    Tuesday: Patchy drizzle with a chance of showers before 2pm, then patchy drizzle with a slight chance of light rain after 2pm.  Mostly cloudy, with a high near 70. South wind 5 to 7 mph.  Chance of precipitation is 30%.

    Chance
    Showers

    High: 70 °F

  • Tuesday
    Night

    Tuesday Night: Patchy drizzle and fog with a chance of light rain.  Mostly cloudy, with a low around 60. South wind 3 to 5 mph.

    Chance Light
    Rain and
    Patchy Fog

    Low: 60 °F

  • Wednesday

    Wednesday: Patchy drizzle with a slight chance of light rain before 11am, then patchy drizzle with a slight chance of showers between 11am and 2pm.  Patchy fog before 2pm.  Otherwise, mostly cloudy, with a high near 71. Light southeast wind becoming south 6 to 11 mph in the morning.  Chance of precipitation is 20%.

    Patchy
    Drizzle and
    Patchy Fog

    High: 71 °F

  • Wednesday
    Night

    Wednesday Night: Mostly cloudy, with a low around 59. South wind 5 to 7 mph.

    Mostly Cloudy

    Low: 59 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 71.

    Mostly Sunny

    High: 71 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 55.

    Partly Cloudy

    Low: 55 °F

  • Friday

    Friday: Partly sunny, with a high near 66.

    Partly Sunny

    High: 66 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 53.

    Partly Cloudy

    Low: 53 °F

Detailed Forecast

Overnight
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 55. Light southeast wind.
Tuesday
Patchy drizzle with a chance of showers before 2pm, then patchy drizzle with a slight chance of light rain after 2pm. Mostly cloudy, with a high near 70. South wind 5 to 7 mph. Chance of precipitation is 30%.
Tuesday Night
Patchy drizzle and fog with a chance of light rain. Mostly cloudy, with a low around 60. South wind 3 to 5 mph.
Wednesday
Patchy drizzle with a slight chance of light rain before 11am, then patchy drizzle with a slight chance of showers between 11am and 2pm. Patchy fog before 2pm. Otherwise, mostly cloudy, with a high near 71. Light southeast wind becoming south 6 to 11 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 59. South wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Partly sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 49.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 63.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.93°N 73.06°W (Elev. 161 ft)
10:42 pm EDT Oct 19, 2020
1am EDT Oct 20, 2020-6pm EDT Oct 26, 2020
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database