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

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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

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

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

Areas Fog
Low: 69 °F
Friday

Chance
T-storms and
Patchy Fog
High: 87 °F
Friday
Night

Heavy Rain
Low: 71 °F
Saturday

Chance
T-storms
High: 87 °F
Saturday
Night

Chance
T-storms
Low: 69 °F
Sunday

Mostly Sunny
then Chance
T-storms
High: 84 °F
Sunday
Night

Partly Cloudy
Low: 62 °F
Monday

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.