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Aug 16-17, 2025: Severe Weather and Flash Flooding

Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Thunderstorm Light Rain

73°F

23°C

Humidity	96%
Wind Speed	S 8 mph
Barometer	30.00 in (1015.5 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	18 Aug 9:52 pm CDT

More Information:

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

Extended Forecast for

Deer Park IL

Flood Watch August 18, 10:40pm until August 19, 04:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 18, 10:40pm until August 19, 04:00am
NOW until 4:00am Tue
Flood Watch
Tonight
Low: 71 °F
T-storms
Likely
Tuesday
High: 83 °F
Slight Chance
T-storms then
Partly Sunny
Tuesday Night
Low: 67 °F
Mostly Cloudy
Wednesday
High: 78 °F
Mostly Sunny
Wednesday Night
Low: 64 °F
Mostly Clear
Thursday
High: 81 °F
Sunny
Thursday Night
Low: 61 °F
Clear
Friday
High: 84 °F
Sunny

Detailed Forecast

Tonight

Showers and thunderstorms likely, mainly before 1am. Cloudy, with a low around 71. South wind around 5 mph becoming west after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, with a high near 83. North wind 5 to 10 mph.

Tuesday Night

Mostly cloudy, with a low around 67. North wind around 5 mph, with gusts as high as 10 mph.

Wednesday

Mostly sunny, with a high near 78. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 64. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

Thursday

Sunny, with a high near 81.

Thursday Night

Clear, with a low around 61.