St. Louis woke up to clear skies and a chill in the air on Thursday, March 12, 2026, with temperatures parked in the mid-30s. By this afternoon, the region should warm into the upper 50s, with a high near 57°F under mostly sunny skies. Light west-to-southwest breezes will keep things feeling brisk in open areas, and anyone with evening outdoor plans should expect conditions to turn noticeably more blustery after dark.
The National Weather Service has issued a Wind Advisory from 10 p.m. Thursday, March 12, 2026, through 11 a.m. Friday, March 13, 2026, covering parts of northeast Missouri, including Knox, Lewis, Marion and Shelby counties, along with portions of west-central and southwest Illinois. Forecasters are calling for gusts of 35 to 45 mph across the advisory area, with a few higher gusts possible as southwest winds ramp up overnight. Residents are urged to secure loose outdoor items and give extra room to high-profile vehicles on the roads, according to the National Weather Service.
How This Fits With Earlier Storms
This latest update lines up with our March 10 coverage that flagged the region as primed for late-week storms and big temperature swings. For a refresher on how the pattern has been evolving, check out our earlier story on that midnight storm blast.
Weekend Outlook
Milder, mostly dry weather is expected to hold through Saturday, with highs in the upper 50s to mid 60s. On Sunday, a strong cold front is forecast to sweep through, bringing rain, a chance of thunderstorms and more gusty winds. As colder air settles in late Sunday night into Monday, precipitation may flip to a rain and snow mix, with light accumulations possible mainly north of I-70. By Monday, a much colder air mass takes over, with highs around the mid-30s and lows dropping into the teens Monday night. Weekend plans may need a backup option until the exact timing of the front becomes clearer.
Tonight's To-Do List
Before the wind machine kicks into high gear, bring in patio furniture, secure tarps and trash cans, and skip using ladders or loose equipment outdoors after dark. Drivers in boxy or high-profile vehicles should give themselves extra space on bridges and open highways, and anyone in the advisory counties will want to keep an eye on local updates as conditions ramp up overnight.
