On Tuesday, July 29, St. Louis will have yet another day of oppressive summer temperatures, with heat index readings reaching 114°F.
An Extreme Heat Warning is in force through 7 p.m. Wednesday, affecting eastern and central Missouri, including St. Louis, Jefferson City, Columbia, and regions along Interstate 70, according to the St. Louis National Weather Service. Tuesday’s high will be 100°F, and the risk of heat exhaustion or heat stroke will be increased by the high humidity. Restrict outside activities, drink plenty of water, and keep an eye on your pets and neighbors who may be at risk.
With the possibility of showers and thunderstorms rising through Thursday evening, there may be some respite late Tuesday night. Heavy rainfall or brief gusts of wind could be produced by certain storms, particularly on Wednesday evening and into early Thursday.
Five-Day Weather Outlook: St. Louis Area (July 29 – August 3)
- Tuesday, July 29:
High: 100°F (Heat Index 114°F), mostly sunny and dangerously hot.
Night: Clear early, slight storm chance late. Low near 78°F. - Wednesday, July 30:
High: 94°F, chance of storms after 1 p.m., showers likely overnight.
Night: Rain, possible storms. Low around 72°F. - Thursday, July 31:
High: 82°F, cooler with 40% chance of storms.
Night: Partly cloudy, slight rain chance. Low near 65°F. - Friday, August 1:
High: 84°F, mostly sunny and pleasant.
Night: Clear, low near 63°F. - Saturday, August 2 & Sunday, August 3:
Mostly sunny both days, highs near 84°F.
Perfect start to August with calmer, drier summer weather ahead.
Stay weather-aware and plan around the extreme heat Tuesday. Relief is coming — but keep your eyes on the radar through Thursday.
