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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

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Overcast

75°F

24°C

Humidity 94%
Wind Speed W 5 mph
Barometer 30.00 in (1015.1 mb)
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Last update 21 Jul 1:52 am CDT
Extended Forecast for

Algonquin IL

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

    NOW until further notice

    Flood Warning

  • Overnight

    Overnight: Areas of fog.  Otherwise, mostly cloudy, with a low around 69. Calm wind.

    Areas Fog

    Low: 69 °F

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 10am.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 87. Light and variable wind becoming south southeast 5 to 10 mph in the morning.

    Chance
    T-storms and
    Patchy Fog

    High: 87 °F

  • Friday
    Night

    Friday Night: Showers and thunderstorms likely. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a low around 71. South southeast wind around 5 mph, with gusts as high as 10 mph.  Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

    Heavy Rain

    Low: 71 °F

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly before 1pm.  Mostly cloudy, with a high near 87. Heat index values as high as 96. South southwest wind 10 to 15 mph becoming west in the afternoon.

    Chance
    T-storms

    High: 87 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 69. Northwest wind 5 to 10 mph.

    Chance
    T-storms

    Low: 69 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 84.

    Mostly Sunny
    then Chance
    T-storms

    High: 84 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 62.

    Partly Cloudy

    Low: 62 °F

  • Monday

    Monday: Mostly sunny, with a high near 76.

    Mostly Sunny

    High: 76 °F

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 69. Calm wind.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 10am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 87. Light and variable wind becoming south southeast 5 to 10 mph in the morning.
Friday Night
Showers and thunderstorms likely. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 71. South southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Saturday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 87. Heat index values as high as 96. South southwest wind 10 to 15 mph becoming west in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 69. Northwest wind 5 to 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Algonquin IL
 42.17°N 88.3°W
2:17 am CDT Jul 21, 2017
2am CDT Jul 21, 2017-6pm CDT Jul 27, 2017
 
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