ALTON - The National Weather Service in St. Louis reports summer heat and humidity will return this week.

"High temperatures are forecast in the upper 80s to lower 90s through Thursday, which is 8-10 degrees above normal," the NWS said in a forecast report. "When combined with the humidity, look for heat index values to peak in the 90-100 degree range each afternoon, with the highest values located in the St. Louis metro region."

Article continues after sponsor message

Get The Latest News!

Don't miss our top stories and need-to-know news everyday in your inbox.

The weather will change late in the week: "A cold front will move into and across the region late Thursday into Friday," the NWS said. "This front will bring showers and thunderstorms, and also bring cooler and less humid weather beginning Friday."

Prefer RiverBender on Google
Copyright 2026 Riverbender.com. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

 

More like this:

Hot, Humid Monday Brings Extreme Heat Warning Through Friday Night
6 days ago
National Weather Service Confirms Three Tornadoes From Sunday Storms
Jun 23, 2026
Area Braces for Days Of Dangerous Heat
Jun 27, 2026
Hot, Humid Thursday Brings Heat Index Up to 107 and Late Storm Chances
3 days ago
"Rockin' With Robert" Concert Series Reschedules June 30th Show Due to Extreme Heat
6 days ago