Severe storms with large hail, damaging winds, and tornadoes are possible in the St. Louis area Tuesday afternoon and evening, with the greatest risk in the Level 3 risk zone from northeast Missouri

St. Louis woke up to clear skies and springlike air on Sunday, March 15, 2026, with temperatures hovering around 63°F at area observation sites. It will not stay that way for long. A fast-moving system is set to shove a line of showers and isolated thunderstorms into the region from late morning into early afternoon,

Four tornadoes touched down in Illinois during a round of strong storms in the St. Louis region Sunday night.

Temperatures are forecast to drop into the teens tonight, prompting St. Louis shelters to expand capacity while organizers prepare for Tuesday’s St. Patrick’s Day Parade in Dogtown.

St. Louis is starting Friday, March 13, 2026, on a gentle note: mild, mostly clear, and sitting in the upper 40s with a steady west wind. By late afternoon, temperatures should climb into the low 60s under partly sunny skies.

Sunday will bring an action-packed weather day to the St. Louis region with severe thunderstorms, gusty winds, fast-dropping temperatures and perhaps even some snow all possible into Monday.

Tuesday is bringing a warm up in temperatures, and the evening into overnight hours will be bringing rain and thunderstorms to the area, with the potential to become severe.

The outlook from the National Weather Service warns that severe storms will be most likely in places like northeast Missouri and west-central Illinois.