Widely scattered storms overnight, then the heat kicks in Monday

Highs in the 90s first half of the week
Published: Jul. 31, 2022 at 8:15 PM CDT
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PEORIA (Heart of Illinois ABC) - A warm front is lifting through Illinois this afternoon and evening. This will bring a warm and humid airmass overhead in central Illinois. A weak cold front will work through overnight and will clash with this airmass and will likely spark a few widely scattered showers and thunderstorms while you’re sleeping. These storms aren’t expected to be severe and should be over with by the time you’re heading out the door.

Valid at 5:00 AM Monday.
Valid at 5:00 AM Monday.(First Alert Weather, Heart of Illinois ABC)

Temperatures will remain mild overnight, only falling into the low 70s. Skies will start off partly cloudy but will become mostly sunny for the rest of the day. Highs will climb near 90 with feel-like temperatures in the mid to upper 90s.

Hot & humid
Hot & humid(First Alert Weather, Heart of Illinois ABC)

The heat continues through majority of this week. Highs on Tuesday will be near 90, then Wednesday looks to be the hottest day of the week with highs in the mid 90s and feel-like temperatures between 100-110. Wednesday will likely be a First Alert Weather Day to account for this dangerous heat.

Hottest day Wednesday with forecast highs in the mid 90s and triple digit heat index values.
Hottest day Wednesday with forecast highs in the mid 90s and triple digit heat index values.(First Alert Weather, Heart of Illinois ABC)

Wednesday evening a cold front looks to approach from the northwest, and this will likely spark thunderstorms Wednesday night into Thursday. We’ll keep an eye on whether some storms Wednesday evening can become strong to severe, and we’ll adjust the forecast as needed over the next couple of days.

Valid at 10:30 PM Wednesday
Valid at 10:30 PM Wednesday(First Alert Weather, Heart of Illinois ABC)

This cold front should help reduce high temperatures for Thursday into the upper 80s. The end of the week will still feature above average temperatures, but the excessive heat looks to hold off.

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