Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Thunderstorms With Heavy Rain Possible from the Upper Midwest to the Mid-Atlantic; Excessive Heat For Central U.S.

Storms will move from the Upper Great Lakes to the Ohio Valley/Lower Great Lakes into the northern Mid-Atlantic through the day. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat warnings and heat advisories are in place for states in the Central Plains, the Southeast, and the Mid-Atlantic. Localized flash flooding may occur in the Southwest. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

82°F

28°C

Humidity 51%
Wind Speed NE 8 mph
Barometer 29.88 in (1011.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 22 Jul 8:56 am EDT
Extended Forecast for

Hauppauge NY

  • Today

    Today: Mostly sunny, with a high near 88. North wind 7 to 11 mph becoming south in the afternoon.

    Mostly Sunny

    High: 88 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after midnight. Some of the storms could produce gusty winds and heavy rain.  Cloudy, with a low around 72. South wind around 6 mph becoming light and variable.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Heavy Rain

    Low: 72 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before noon.  Mostly cloudy, with a high near 80. Northeast wind 9 to 13 mph.

    Chance
    T-storms

    High: 80 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. East wind 7 to 9 mph.

    Chance
    T-storms

    Low: 70 °F

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 80. Southeast wind 5 to 8 mph becoming calm  in the afternoon.

    Chance
    T-storms

    High: 80 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 67.

    Chance
    T-storms

    Low: 67 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    Mostly Sunny

    High: 80 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 64.

    Mostly Clear

    Low: 64 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80.

    Mostly Sunny

    High: 80 °F

Detailed Forecast

Today
Mostly sunny, with a high near 88. North wind 7 to 11 mph becoming south in the afternoon.
Tonight
Showers and thunderstorms likely, mainly after midnight. Some of the storms could produce gusty winds and heavy rain. Cloudy, with a low around 72. South wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before noon. Mostly cloudy, with a high near 80. Northeast wind 9 to 13 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. East wind 7 to 9 mph.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Southeast wind 5 to 8 mph becoming calm in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly cloudy, with a low around 68.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Click Map For Forecast
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
6:14 am EDT Jul 22, 2017
9am EDT Jul 22, 2017-6pm EDT Jul 28, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database