St. Louis is waking up to clear skies this morning (Wednesday, May 13, 2026), with temperatures sitting in the low 60s and a steady northwest breeze already in the mix. Sunshine should push highs into the mid-70s this afternoon, setting up a pleasant but noticeably breezy spring day. Gusts are expected to crank up through the afternoon, especially along the river and in wide-open parking lots.
Afternoon Winds Pick Up
Northwest winds will average 7–13 mph this afternoon with gusts up to about 22 mph, so unsecured patio umbrellas or lightweight yard gear might go for a short trip. Expect a high near 76°F today (Wednesday, May 13); the gusty northwest flow should ease after sunset, according to the National Weather Service.
Cool Night, Then Southerly Shift
Skies stay clear Wednesday night (May 13), and temperatures will drop to a low around 47°F. Some valley spots could slip into the upper 30s and see a bit of patchy fog early Thursday morning (May 14). By Thursday (May 14), southerly winds return, bringing humidity and temperatures back into the mid-70s ahead of a more unsettled stretch.
Weekend Heat And Thunderstorm Chances
Warm, humid air builds Friday through Monday, with highs near 85°F on Friday (May 15), near 89°F Saturday (May 16), around 92°F Sunday (May 17) and near 94°F Monday (May 18). Scattered afternoon and evening showers and thunderstorms are possible each day, though forecasters say most of the weekend should stay dry and estimate the odds of widespread 90°F readings this weekend are below 10%, according to the National Weather Service. For background on the pattern, see earlier storm rumble coverage from Hoodline.
How To Plan
As temperatures and humidity climb later this week, it is smart to shift strenuous outdoor plans to the morning or evening and keep water close by. If heat becomes a concern next week, check the City of St. Louis' list of cooling centers and community resources and keep an eye on local transit advisories as storms roll through, according to the City of St. Louis.
