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Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Fair

86°F

30°C

Humidity 57%
Wind Speed NW 8 mph
Barometer 29.91 in (1012.7 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 21 Jul 10:56 am EDT
Extended Forecast for

Upton NY

  • Today

    Today: Sunny, with a high near 94. West wind 7 to 13 mph.

    Sunny

    High: 94 °F

  • Tonight

    Tonight: Mostly clear, with a low around 70. Southwest wind 5 to 9 mph becoming calm  in the evening.

    Mostly Clear

    Low: 70 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 90. Light and variable wind becoming south 5 to 9 mph in the afternoon.

    Mostly Sunny

    High: 90 °F

  • Saturday
    Night

    Saturday Night: Showers likely and possibly a thunderstorm. Some of the storms could produce gusty winds and heavy rain.  Increasing clouds, with a low around 72. Southeast wind 6 to 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Heavy Rain

    Low: 72 °F

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rain.  Mostly cloudy, with a high near 82. North wind 5 to 7 mph.  Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Heavy Rain

    High: 82 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 69.

    Chance
    Showers

    Low: 69 °F

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 82.

    Chance
    T-storms

    High: 82 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 69.

    Chance
    Showers

    Low: 69 °F

  • Tuesday

    Tuesday: A 30 percent chance of showers before 2pm.  Partly sunny, with a high near 80.

    Chance
    Showers

    High: 80 °F

Detailed Forecast

Today
Sunny, with a high near 94. West wind 7 to 13 mph.
Tonight
Mostly clear, with a low around 70. Southwest wind 5 to 9 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 90. Light and variable wind becoming south 5 to 9 mph in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm. Some of the storms could produce gusty winds and heavy rain. Increasing clouds, with a low around 72. Southeast wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 82. North wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 69.
Monday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers before 2pm. Partly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 81.
Click Map For Forecast
Point Forecast:
Upton NY
 40.87°N 72.89°W (Elev. 89 ft)
10:24 am EDT Jul 21, 2017
11am EDT Jul 21, 2017-6pm EDT Jul 27, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database