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Strong Thunderstorms and Heavy Rain Possible

A frontal boundary stretching from New Mexico across Texas and into the Gulf Coast will be the focus for strong to severe thunderstorms. Heavy rain, with local flooding is also possible in these areas. A low pressure area near the Carolina coast may also bring heavy rain and local flooding. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

70°F

21°C

Humidity 73%
Wind Speed NW 5 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 25 Jun 1:56 am EDT
Extended Forecast for

Port Jefferson NY

  • Overnight

    Overnight: Mostly clear, with a low around 67. Light west wind.

    Mostly Clear

    Low: 67 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 82. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.

    Mostly Sunny

    High: 82 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 62. West wind 7 to 10 mph.

    Mostly Clear

    Low: 62 °F

  • Monday

    Monday: Sunny, with a high near 78. Southwest wind 7 to 10 mph.

    Sunny

    High: 78 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 58. Southwest wind 6 to 9 mph.

    Partly Cloudy

    Low: 58 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    Mostly Sunny

    High: 76 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 61.

    Partly Cloudy

    Low: 61 °F

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    Sunny

    High: 78 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 65.

    Partly Cloudy

    Low: 65 °F

Detailed Forecast

Overnight
Mostly clear, with a low around 67. Light west wind.
Sunday
Mostly sunny, with a high near 82. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 62. West wind 7 to 10 mph.
Monday
Sunny, with a high near 78. Southwest wind 7 to 10 mph.
Monday Night
Partly cloudy, with a low around 58. Southwest wind 6 to 9 mph.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Partly sunny, with a high near 85.
Friday Night
Mostly cloudy, with a low around 72.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
9:11 pm EDT Jun 24, 2017
2am EDT Jun 25, 2017-6pm EDT Jul 1, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database