St. Louis woke up to clear skies and a mild 68°F early Sunday, but the quiet start is not sticking around. Showers and thunderstorms are likely after 9 a.m., with the afternoon turning much wetter as highs climb into the mid-80s. Anyone banking on a dry day outside should be ready for sudden downpours and gusty winds that can quickly cut visibility and slow travel.
What To Expect Today
Storms are expected to fire up after 9 a.m. and become more widespread from mid to late afternoon, with the high topping out near 86°F. South winds will run around 5 to 14 mph with gusts up to 28 mph, and the chance of measurable rain sits at about 70%. A Flood Watch is in place for parts of the metro from 7 a.m. through late tonight, as thunderstorms could drop 1 to 3 inches of rain, with isolated higher totals possible, according to the National Weather Service St. Louis.
Severe Weather And Flood Risk
Forecasters say some of the storms this afternoon and evening could turn strong to severe, with tornadoes, damaging winds, and large hail all on the table if storms organize. Heavy, efficient rainfall may trigger flash flooding in low-lying and poor-drainage spots, and any slow-moving or training storms could send runoff surging into streets and underpasses in a hurry.
During The Commute
The evening drive is likely to be soggy, with wet roads and slower traffic. Plan on extra time, ease off the gas in heavy rain, and steer clear of low-water crossings. Air travelers could also feel the impact if heavier storms move over key corridors, so check in with your airline and watch for advisories before heading to Lambert.
How To Stay Safe
Residents are urged to sign up for local alerts and follow official updates from the City Emergency Management Agency for neighborhood-level notices and any shelter information. If flooding starts to threaten your area, move vehicles to higher ground, avoid walking or driving through standing water, and be ready to act quickly if flood warnings are issued.
Looking Ahead
Once the front moves through, highs dip to the upper 70s on Monday with only a slight chance of showers. Mostly drier conditions are expected through midweek before another batch of scattered storms shows up later in the week. If you have outdoor plans coming up, keep an eye on updated forecasts before you head out.
