National Weather Service

News Headlines

June 18, 2025: Line of Thunderstorms Produces Wind Damage in Eastern Illinois and Northwestern Indiana
June 22, 2025 Marks the 10-Year Anniversary of the June 22, 2015 Tornado Outbreak, Including the Coal City-Braidwood EF-3 Tornado

Hazardous Weather Conditions

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fair

78°F

26°C

Humidity	74%
Wind Speed	SW 13 mph
Barometer	30.05 in (1016.9 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	23 Jun 4:52 am CDT

More Information:

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

Extended Forecast for

Dundee IL

Heat Advisory June 23, 05:16am until June 24, 12:00am

Click here for hazard details and duration

Heat Advisory

Heat Advisory June 23, 05:16am until June 24, 12:00am
NOW until 12:00am Tue
Heat Advisory
Today
High: 95 °F
Hot and
Breezy
Tonight
Low: 73 °F
Slight Chance
T-storms and
Breezy
Tuesday
High: 89 °F
Slight Chance
T-storms then
T-storms
Likely
Tuesday Night
Low: 67 °F
T-storms
Likely
Wednesday
High: 83 °F
Chance
T-storms
Wednesday Night
Low: 68 °F
Chance
T-storms
Thursday
High: 89 °F
Chance
T-storms
Thursday Night
Low: 71 °F
Chance
T-storms

Detailed Forecast

Today

Sunny and hot, with a high near 95. Heat index values as high as 101. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.

Tonight

A slight chance of showers and thunderstorms between 9pm and 4am. Increasing clouds, with a low around 73. Breezy, with a southwest wind 15 to 20 mph becoming northwest 5 to 10 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

Tuesday

Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 89. Heat index values as high as 96. West southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. East northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.

Wednesday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. East wind 5 to 10 mph becoming west northwest in the morning.

Wednesday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

Thursday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 71.

Friday

A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.

Friday Night

Partly cloudy, with a low around 66.