St. Louis woke to clear skies and mild readings Tuesday morning, April 14, 2026, but the day will flip fast. Highs are still expected to surge near 90°F this afternoon before storms move in late Tuesday and become more widespread on Wednesday, April 15, 2026. Southwest winds will crank up through the day and gust into the 20s, which will make the afternoon feel hotter and could blow around unsecured yard items. If you have outdoor plans, keep a backup option handy and keep an eye on the sky.
Afternoon Heat And Gusty Winds
Mostly sunny skies are on tap through the afternoon, with the hottest stretch in the mid to late afternoon. Plan for highs around 90°F with sticky humidity. Southwest winds of roughly 9 to 15 mph with gusts near 25 mph are likely, so high-profile vehicles and unsecured outdoor furniture may be affected during peak heating.
Storms Tonight And Wednesday
A slight chance of showers and thunderstorms arrives late Tuesday night, but the better and more widespread risk comes Wednesday, when showers and thunderstorms are likely across the metro, especially during the afternoon. Forecasters note storms that develop could become organized and produce damaging winds or large hail in spots. That timing and the area’s severe potential are outlined in the National Weather Service forecast discussion.
Weekend Cooldown And Late-Chill Risk
A strong cold front is expected to arrive late this week, dropping temperatures into the 60s by Sunday and setting up a sharp overnight fall Saturday into Sunday. Some nights could see lows in the low 40s, and with clear, calm conditions there is a small chance of near-freezing readings on the coldest mornings, something gardeners and early-morning workers should keep in mind. Temperatures should moderate again early next week.
Plan For Today And Your Commute
Expect gusty, warm conditions this afternoon and a small but notable chance of rumbles tonight, with a greater chance of widespread storms Wednesday. Secure loose outdoor items and give yourself extra time on the road. Check for any watches or warnings before heading out and consider moving sensitive outdoor activities indoors on Wednesday afternoon.
