ST. LOUIS – After quite a few cold snaps throughout the summer, things begin to warm up for Saturday. So much, there will be an excessive heat warning from Sunday to Wednesday.

On Saturday, highs will be near 90, but humidity levels won’t be too bad. By Sunday, we’ll have highs in the mid to upper 90s with heat index values of 110. 

It’ll stay just as hot Monday through at least Wednesday, with highs near 100 and heat indices of 110+. Rain chances are minimal.

Temperatures will come close to pushing August single-day records through Thursday. If you plan activities outside, make sure to wear light clothing, use plenty of sunscreen and stay hydrated.