Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

75°F

24°C

Humidity 84%
Wind Speed W 6 mph
Barometer 29.81 in (1009.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 23 Jul 4:56 am EDT
Extended Forecast for

4 Miles SSW Bellport NY

  • Today

    Today: Sunny, with a high near 93. Heat index values as high as 97. West wind 9 to 16 mph.

    Sunny

    High: 93 °F

  • Tonight

    Tonight: Mostly clear, with a low around 65. Northwest wind 5 to 9 mph becoming light  after midnight.

    Mostly Clear

    Low: 65 °F

  • Sunday

    Sunday: Sunny, with a high near 87. North wind 7 to 11 mph becoming southwest in the afternoon.

    Sunny

    High: 87 °F

  • Sunday
    Night

    Sunday Night: Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 73. South wind 6 to 9 mph.

    Mostly Clear
    then Patchy
    Fog

    Low: 73 °F

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 83. Southwest wind 7 to 14 mph.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 83 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly before 3am.  Mostly cloudy, with a low around 75.

    Chance
    T-storms

    Low: 75 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    Mostly Sunny

    High: 85 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 73.

    Partly Cloudy

    Low: 73 °F

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    Sunny

    High: 83 °F

Detailed Forecast

Today
Sunny, with a high near 93. Heat index values as high as 97. West wind 9 to 16 mph.
Tonight
Mostly clear, with a low around 65. Northwest wind 5 to 9 mph becoming light after midnight.
Sunday
Sunny, with a high near 87. North wind 7 to 11 mph becoming southwest in the afternoon.
Sunday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 73. South wind 6 to 9 mph.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 83. Southwest wind 7 to 14 mph.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 75.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Mostly cloudy, with a low around 73.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
Click Map For Forecast
Point Forecast:
4 Miles SSW Bellport NY
 40.7°N 72.96°W (Elev. 0 ft)
3:12 am EDT Jul 23, 2016
5am EDT Jul 23, 2016-6pm EDT Jul 29, 2016
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database