Thursday, August 14, 2025

Northern Illinois could see 100° heat indices this weekend

Following a enjoyably comfortable Thursday, southeasterly winds will help pull a little more heat and humidity for Friday. Expect dew points to wind up hovering around the 70° mark, which will leave heat indices in the low 90s. 


 

 

As a strong ridge of high pressure sweeps into the Midwestern U.S, higher levels of heat and humidity are expected to filter in for the weekend. 


 



Dew points will end up a smidge higher Saturday and Sunday, leaving heat indices rather uncomfortable in the 95°-100° range. It may be wise to reschedule any strenuous afternoon outdoor activities to the morning hours or the evening hours when conditions aren't as uncomfortable. If that can't be done, be extra cautious with outdoor activities and stay hydrated.

 

From there, our weather pattern shifts again, bringing with it an increased chance for showers and storms. Now, the timing and intensity of these storms remain uncertain, though scattered activity remains on the table. These thunderstorms will be fueled by a very warm and humid airmass, providing a conducive atmosphere for heavy downpours and even strong to severe storms. As always, stay up to date with the forecast as more details come about.


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