St. Louis, Missouri – Scattered thunderstorms and dangerous heat will return to St. Louis on Sunday, July 6, as temperatures soar back into the 90s. Afternoon storms could bring heavy rain, lightning, and minor flooding along I-70 and I-64 just as weekend traffic peaks.
According to the National Weather Service, the storm threat begins after 1 p.m. Sunday, with a 50% chance of showers and thunderstorms through the evening. Highs will reach 91°F with humidity making it feel closer to 100°F. Southwest winds may gust up to 9 mph, adding to storm instability.
Scattered rain and storm chances continue into Monday and Tuesday afternoons, keeping the region locked in a humid, stormy pattern. Monday will see another 30% chance of storms after 1 p.m., with highs again reaching 91°F. Expect conditions to remain muggy overnight, with lows in the mid-70s.
Travelers should plan for delays on major roadways during peak storm hours. Residents are urged to avoid flooded intersections, stay hydrated, and check on elderly neighbors or those without air conditioning.
Five-Day Outlook: Sunday, July 6 – Thursday, July 11
- Sunday: Scattered storms (50%), high 91°F
- Monday: Afternoon storm chance (30%), high 91°F
- Tuesday: Thunderstorms possible after 1 p.m. (30%), high 92°F
- Wednesday: Storms remain possible (40%), high 89°F
- Thursday: 30% storm chance, high 91°F
What’s next? Storm chances remain into midweek, with another round of heat returning by Thursday. Stay alert for updated advisories.
