Todays weather in St. Louis MO - Sunday - 31 May 2026

St. Louis is in for a split-personality day: a mostly calm, partly sunny afternoon giving way to a stormy night with a 78% chance of showers and thunderstorms after dark.Right now temperatures sit at 84°F with a light southeast wind at 6 mph. Daytime hours are manageable — only a 19% chance of rain, so your morning commute and afternoon errands are largely in the clear. Light clothing is all you need. No umbrella required until evening.The overnight story is different. Storms become likely before 10 p.m. and continue in waves through the night. The low drops to around 66°F. If you've got anything outside — patio furniture, bikes, garden gear — bring it in before dinner. Late commuters should keep an eye on the sky; that 78–80% precipitation chance is not a number to brush off.Looking ahead, Monday carries similar energy with a 54% storm chance and a high near 85°F. Then the pattern clears beautifully: Tuesday through Thursday brings three consecutive sunny days with highs from 82°F to 87°F — a rare and welcome window for St. Louis in early summer.Friday and the weekend see heat and storm chances return, with highs near 89°F and increasing storm odds through Saturday.Your practical takeaway: enjoy the sunshine this afternoon, have a plan for tonight, and circle Tuesday through Thursday on your calendar for outdoor plans.A YesWee production, built using AI technology.This episode includes AI-generated content.