National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Summer Heat Continues For Several Spots

More summer heat is expected for parts of the western and southern U.S. this week. Excessive Heat Warnings are in effect for parts of the West, while Heat Advisories blanket the South. Record high temperatures are possible in the South this weekend well into next week, so this period of hazardous heat will be a prolonged one. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Heavy Rain Fog/Mist

70°F

21°C

Humidity 100%
Wind Speed NW 6 mph
Barometer 29.82 in (1009.6 mb)
Dewpoint 70°F (21°C)
Visibility 2.50 mi
Last update 17 Jul 11:56 pm EDT
Extended Forecast for

West Sayville NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. Southwest wind around 6 mph becoming light and variable.

    Mostly Cloudy

    Low: 67 °F

  • Wednesday

    Wednesday: Sunny, with a high near 84. North wind 8 to 11 mph.

    Sunny

    High: 84 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 66. North wind 6 to 9 mph.

    Mostly Clear

    Low: 66 °F

  • Thursday

    Thursday: Sunny, with a high near 80. North wind 5 to 10 mph becoming light and variable in the afternoon.

    Sunny

    High: 80 °F

  • Thursday
    Night

    Thursday Night: Clear, with a low around 67. South wind 3 to 7 mph.

    Clear

    Low: 67 °F

  • Friday

    Friday: Sunny, with a high near 81.

    Sunny

    High: 81 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 68.

    Mostly Clear

    Low: 68 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    Mostly Sunny

    High: 80 °F

  • Saturday
    Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 69.

    Chance
    T-storms

    Low: 69 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. Southwest wind around 6 mph becoming light and variable.
Wednesday
Sunny, with a high near 84. North wind 8 to 11 mph.
Wednesday Night
Mostly clear, with a low around 66. North wind 6 to 9 mph.
Thursday
Sunny, with a high near 80. North wind 5 to 10 mph becoming light and variable in the afternoon.
Thursday Night
Clear, with a low around 67. South wind 3 to 7 mph.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 68.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
A 40 percent chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 69.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
West Sayville NY
 40.74°N 73.1°W (Elev. 30 ft)
Last Update:
12:29 am EDT Jul 18, 2018
Forecast Valid:
12am EDT Jul 18, 2018-6pm EDT Jul 23, 2018
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation