St. Louis woke up to clear, muggy skies Tuesday morning with temperatures sitting around 61°F and high humidity, and it is on track for another unseasonably warm day, with highs near 83°F on Tuesday, March 10, 2026. That warmth, teamed up with a steady southerly flow, will help prime the atmosphere for thunderstorms late Tuesday night into early Wednesday, and at least some of those storms could turn severe.
According to the National Weather Service St. Louis, the main window for thunderstorms runs from about 10 p.m. Tuesday into the overnight hours through around 4 a.m. Wednesday, March 11, with overnight precipitation chances near 80 percent. Forecasters warn that any organized storms could bring damaging straight-line winds, very large hail and locally heavy rainfall. Ahead of the front, expect south winds of 6 to 16 mph this afternoon with gusts into the mid 20s.
Afternoon Heat And Gusty Winds
Plenty of sunshine should push temperatures through the 70s into the low 80s by mid to late afternoon, making it feel more like late spring than mid March. Humidity will be noticeable, with dew points in the mid 60s, and gusty south winds will leave exposed spots like bridges and riverfronts feeling breezier than the thermometer alone suggests. If you have outdoor plans Tuesday afternoon, aim for shaded areas and keep water close.
Late Night Storm Threat
Storms that fire up late Tuesday night into the early morning commute on Wednesday, March 11, could produce brief but intense bursts of wind and heavy rain that may cause localized flooding and downed limbs. The City of St. Louis Emergency Management recommends signing up for local alerts and having a quick shelter plan ready. Avoid driving through standing water and build in extra time if you need to travel overnight or early Wednesday.
Wednesday Outlook
Behind the front, Wednesday, March 11, turns noticeably cooler and windy, with highs near the mid 60s early and temperatures sliding into the low 50s by afternoon. West winds around 12 to 17 mph with gusts into the 30s are expected, especially across open areas and along the river. Rain should taper from northwest to southeast through the day, although spotty showers may hang on into the evening.
Quick Tips
Keep your phone charged with a weather app handy, secure loose outdoor items before sundown, and consider shifting outdoor plans earlier in the day if you can. If severe thunderstorm warnings are issued, move indoors, stay away from windows, and wait for official all clear notices before heading back outside. Hoodline will update readers if watches or warnings are posted overnight.
