Mostly sunny skies and a high temperature of 88 degrees are predicted for Friday in the metro-east.
Winds will gust up to 28 degrees from the northwest, providing some relief from the heat.
The forecast calls for cooler temperatures and the potential of wet weather to close out the last weekend in June.
On both Saturday and Sunday the high temperature is expected to be 78 degrees. A 50 percent chance of thunderstorms is predicted for Saturday and there is a 30 percent chance of thunderstorms Sunday.
The average high temperature for the last month of June in St. Louis is 87 degrees, according to the National Oceanographic and Atmospheric Administration.