Todays weather in St. Louis MO - Thursday - 11 June 2026

St. Louis is waking up to dangerous heat today, with temperatures reaching 96°F and a heat index climbing as high as 104°F. South winds gusting to 29 mph won't bring relief — at this temperature, it feels more like a blast from an open oven. There's an 18% chance of a brief morning shower before 9 a.m., but skies turn mostly sunny after that and the heat simply stays.For your commute and daily plans, light and loose clothing is essential. Hydration is non-negotiable, and if you have any outdoor activities scheduled for this afternoon, move them to the morning window or skip them entirely. Pavement temperatures will be brutal by midday.Tonight is a completely different story. A 90% chance of showers and thunderstorms arrives before 1 a.m., winds shift west and gust to 28 mph, and the low drops to around 66°F. Bring anything outdoors inside before dark — this one is not a maybe.Friday offers welcome relief: sunny skies, a high near 86°F, and light northwest winds. Enjoy it, because the weekend gets complicated again. Saturday carries a 47% storm chance that rises to 86% Saturday night, and Sunday looks outright wet at 86% with a high near 80°F.Bottom line for St. Louis today: survive the heat wave, prepare for tonight's storms, and plan your weekend around rain. Check on neighbours without air conditioning and drink water early and often.A YesWee production, built using AI technology.This episode includes AI-generated content.