St. Louis, Missouri – Strong storms are expected to rumble across central Missouri Monday night, and residents near St. Louis should brace for a chaotic commute Tuesday morning. The National Weather Service has issued a Hazardous Weather Outlook for much of eastern Missouri and southwest Illinois, warning of severe thunderstorms with damaging wind gusts, large hail, and localized flooding.
According to the National Weather Service in St. Louis, showers and thunderstorms will become likely after 7 p.m. Monday, with the most intense storms expected through midnight. Winds could gust up to 22 mph, especially along the I-70 corridor, impacting cities like St. Charles, Florissant, and Belleville. A 100% chance of storms persists overnight, rolling into Tuesday morning with an 80% chance of additional rain.
Power outages and minor tree damage are possible, especially in unprotected areas. Residents should secure outdoor items and avoid travel during peak storm hours. If you’re driving on I-55 or I-70, watch for ponding water and sudden visibility loss.
Tuesday [May 20] brings scattered storms early, followed by breezy and humid conditions with highs around 81°F. Winds will shift south at 10 to 13 mph. Skies will clear by Tuesday night, setting up a cooler, more stable stretch midweek.
☀️ Five-Day St. Louis Area Forecast:
- Wednesday: Mostly sunny, slight rain chance late. High near 66°F.
- Thursday: Partly sunny and mild. High 71°F, low around 49°F.
- Friday: 30% chance of showers. High near 71°F, breezy.
- Saturday: Spotty showers, partly sunny. High near 71°F.
- Sunday: Continued 30% chance of showers. High around 73°F.
