A persistent heat wave will impact the St. Louis area through midweek, bringing temperatures into the triple digits and heat indices around 110 degrees. 


What You Need To Know

  • A ridge creates a heat dome over the region through midweek

  • Temperatures will be in the triple digits 

  • There are no real chances for rain through midweek

  • We'll have dangerous heat indices near 100 degrees

We’ve kicked off the week on a hot note. St. Louis hit 101 degrees on Tuesday for only the second time this year, and the heat is going to continue for the next few days. An Excessive Heat Warning is in effect until Thursday evening. 

The mornings have been quite warm as well. Tuesday set a new record for the low temperature with 83 degrees. The average low for this time of the year is 71 degrees. 

Folks should take proper precautions to stay safe in the heat.

Even after the sun sets, much of the region will continue to stay rather toasty, with temperatures only dropping into the 80s overnight.

Slim rain chances this week

Wednesday will be just as steamy, featuring highs around 100 degrees and heat index values near 110 degrees. Although, there will be some more clouds mixing in with the sun. A few spotty storms are possible. However, the bulk of the rain will stay to the north. 

Even though temperatures will come down a degree or two Thursday, it will still be another sweltering day with the potential for more showers and thunderstorms.

Conditions stay unsettled on Friday with our best chance for storms, courtesy of a cold front. Depending on what time the front moves through will determine how high the mercury rises on Friday.

The front should move through by Saturday morning. This will provide some much needed relief from the heat this weekend as temperatures fall back into seasonable levels.

Not expecting record-breaking temperatures

Despite the heat this week, there won't be risks to the current record high temperatures. The records for much of the week occurred back in 2012, when the mercury climbed well into the 100s and stayed there for several days.