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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 >

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

85°F

29°C

Humidity 60%
Wind Speed S 8 mph
Barometer 29.97 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 21 Jul 1:55 pm CDT
Extended Forecast for

Romeoville IL

Flash Flood Watch July 21, 04:00pm until July 22, 09:00am
Click here for hazard details and duration
Flash Flood Watch
  • This
    Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 89. Heat index values as high as 97. Southeast wind 5 to 10 mph.

    Slight Chance
    T-storms

    High: 89 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 2am. Some of the storms could produce heavy rain.  Mostly cloudy, with a low around 74. South southeast wind around 5 mph, with gusts as high as 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Heavy Rain

    Low: 74 °F

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 8am. Some of the storms could produce heavy rain.  Partly sunny, with a high near 90. Heat index values as high as 101. South southwest wind 10 to 15 mph, with gusts as high as 20 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

    High: 90 °F

  • Saturday
    Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 70. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Slight Chance
    T-storms

    Low: 70 °F

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 87. West wind 5 to 10 mph.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 87 °F

  • Sunday
    Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 65.

    Slight Chance
    T-storms then
    Mostly Clear

    Low: 65 °F

  • Monday

    Monday: Mostly sunny, with a high near 79.

    Mostly Sunny

    High: 79 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 61.

    Mostly Clear

    Low: 61 °F

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    Sunny

    High: 81 °F

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 89. Heat index values as high as 97. Southeast wind 5 to 10 mph.
Tonight
Showers and thunderstorms likely, mainly after 2am. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 74. South southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and thunderstorms likely, mainly before 8am. Some of the storms could produce heavy rain. Partly sunny, with a high near 90. Heat index values as high as 101. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 70. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. West wind 5 to 10 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Romeoville IL
 41.65°N 88.07°W
11:18 am CDT Jul 21, 2017
2pm CDT Jul 21, 2017-6pm CDT Jul 27, 2017
 
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