St. Louis started Monday under partly cloudy skies and a mild 70°F, but the city is on its way into the 80s this afternoon, with warm south winds setting the stage for a stormier stretch by midweek.
Afternoon Winds Pick Up
South winds are expected to strengthen through the day, which could make outdoor plans a bit choppy and send loose items skittering across yards and patios. It is a good idea to secure patio furniture, lightweight gear and any temporary canopies before the afternoon gusts arrive.
Thunderstorm Threat Tuesday and Wednesday
According to the National Weather Service St. Louis, highs are forecast near 85 today with south winds around 8 to 15 mph and gusts as high as 24 mph. Forecasters are calling for a conditional severe weather threat Tuesday night and again on Wednesday, April 15, 2026. Any storms that manage to develop could produce damaging winds and large hail, so it is wise to keep an eye on the forecast Tuesday evening if you have plans after sundown.
Plan Ahead For Midweek Travel
If you have evening plans on Tuesday or outdoor events lined up for Wednesday, it may be worth sketching out a backup plan. Keep your phone charged, stay weather aware and be ready to move indoors quickly if storms start to approach. Residents can sign up for local emergency alerts at NotifySTL to get updates straight to their devices.
What To Expect This Week
Temperatures are expected to stay well above normal through Friday, and another hot day is likely on Tuesday with highs near 88. Scattered to likely showers and thunderstorms are in the forecast from Wednesday into the weekend, which could keep outdoor plans in flux. Cooler, drier air looks possible by Sunday, when highs may drop back into the mid-60s, so it is best to treat weekend outdoor plans as tentative for now.
