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Dangerous Heat Wave To Persist From The Midwest to the Ohio Valley

A very hot and humid air mass will persist today across much of the Midwest and Ohio Valley. Afternoon high temperatures will exceed 95 degrees in many locations with heat index values between 100 and 110. Hot temperatures will expand into the eastern U.S. on Monday with several of the major I-95 cities reaching 90 degrees or higher. Take it slow, drink plenty of fluids and limit outdoor exposure. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

23°C

73°F

Humidity 62%
Wind Speed SW 15 km/h
Barometer 1018.4 mb (30.08 in)
Dewpoint 15°C (59°F)
Visibility 16 km
Last update 17 Jun 7:56 pm EDT
Extended Forecast for

West Sayville NY

  • Tonight

    Tonight: Partly cloudy, with a low around 18. Southwest wind 11 to 13 km/h.

    Partly Cloudy

    Low: 18 °C

  • Monday

    Monday: Sunny, with a high near 29. Southwest wind 14 to 19 km/h increasing to 22 to 27 km/h in the afternoon.

    Sunny

    High: 29 °C

  • Monday
    Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rain.  Increasing clouds, with a low around 21. Southwest wind 21 to 26 km/h decreasing to 13 to 18 km/h after midnight.

    Heavy Rain

    Low: 21 °C

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 10am. Some of the storms could produce heavy rain.  Cloudy through mid morning, then gradual clearing, with a high near 30. North wind 13 to 18 km/h.

    Heavy Rain
    then Mostly
    Sunny

    High: 30 °C

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 18. North wind 5 to 10 km/h becoming calm  after midnight.

    Partly Cloudy

    Low: 18 °C

  • Wednesday

    Wednesday: Mostly sunny, with a high near 24.

    Mostly Sunny

    High: 24 °C

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 18.

    Partly Cloudy

    Low: 18 °C

  • Thursday

    Thursday: Mostly sunny, with a high near 26.

    Mostly Sunny

    High: 26 °C

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 17.

    Partly Cloudy

    Low: 17 °C

Detailed Forecast

Tonight
Partly cloudy, with a low around 18. Southwest wind 11 to 13 km/h.
Monday
Sunny, with a high near 29. Southwest wind 14 to 19 km/h increasing to 22 to 27 km/h in the afternoon.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rain. Increasing clouds, with a low around 21. Southwest wind 21 to 26 km/h decreasing to 13 to 18 km/h after midnight.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 10am. Some of the storms could produce heavy rain. Cloudy through mid morning, then gradual clearing, with a high near 30. North wind 13 to 18 km/h.
Tuesday Night
Partly cloudy, with a low around 18. North wind 5 to 10 km/h becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 24.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 26.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 24.
Friday Night
Partly cloudy, with a low around 17.
Saturday
Mostly sunny, with a high near 25.
Saturday Night
Partly cloudy, with a low around 18.
Sunday
Partly sunny, with a high near 24.
Click Map For Forecast
Point Forecast:
West Sayville NY
 40.74°N 73.1°W (Elev. 9 m)
7:35 pm EDT Jun 17, 2018
8pm EDT Jun 17, 2018-6pm EDT Jun 24, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database