St. Louis, Missouri – A stretch of summer heat is building across Missouri, but first, parts of the St. Louis metro could see isolated thunderstorms Monday and Tuesday afternoon. Drivers and outdoor workers should stay alert for pop-up downpours through Tuesday evening.
According to the National Weather Service in St. Louis, a 30 percent chance of showers and storms arrives Monday afternoon, with another slight chance after 1 p.m. Tuesday. Rain will be hit or miss, with most areas staying dry but locally heavy bursts possible, especially in central and eastern Missouri.
Temperatures will hover near 83°F to 86°F early in the week before climbing rapidly by Thursday. Highs are forecast to reach 92°F Friday and a sweltering 94°F on Saturday. Nights will stay mild and mostly clear, offering little relief from daytime heat.
No widespread alerts are in effect, but residents in areas like Belleville, Chesterfield, and Edwardsville should monitor skies Monday and Tuesday for fast-changing conditions. It’s a good time to check air conditioning systems and stay hydrated as heat risk rises midweek.
More heat is expected into next weekend, with updated outlooks likely by midweek.
Five-Day Forecast for St. Louis, Missouri:
- Monday: Mostly cloudy, 30% chance of afternoon thunderstorms. High near 83°F.
- Tuesday: Partly sunny with a 20% chance of storms. High 86°F.
- Wednesday: Mostly sunny. High near 88°F.
- Thursday: Sunny and warmer. High around 89°F.
- Friday: Hot and mostly sunny. High 92°F.
