Todays weather in St. Louis MO - Saturday - 06 June 2026

St. Louis is sitting at 90 degrees right now, and the weekend ahead is more complicated than the sunshine suggests. Today's forecast carries a 15% chance of afternoon showers and thunderstorms, with the risk climbing after 3 p.m. If you have outdoor plans in the late afternoon, a backup plan is smart. Tonight cools to around 71 — still warm — with a slight storm chance before 8 p.m. and mostly cloudy skies through the night.Sunday ramps things up with a 33% chance of showers and storms throughout the day and a high near 88. But Sunday night is where it gets serious: a 76% chance of storms overnight rolling straight into Monday.Monday is the day to watch. An 87% chance of precipitation, showers and thunderstorms, and a high near 87 degrees make this a heavy, soggy commute situation. Wet roads, slow traffic, and no light-shower conditions — plan for extra travel time and keep that umbrella accessible all day.The back half of the week eventually dries out and heats up fast. Wednesday reaches near 97 and sunny. Thursday and Friday follow the same hot, occasionally stormy pattern — classic St. Louis summer.No active weather alerts are in effect right now, but the Monday setup is worth tracking as it develops through the weekend. Enjoy the morning sunshine today, because a very wet Monday is on its way.This episode includes AI-generated content.