St. Louis

Sun and Storms Play Tag in St. Louis This Week as NWS Advises Readiness for Mixed Conditions

AI Assisted Icon
Published on August 12, 2025
Sun and Storms Play Tag in St. Louis This Week as NWS Advises Readiness for Mixed ConditionsSource: Google Street View

St. Louis residents should be ready to juggle umbrellas and sunglasses today, with the National Weather Service (NWS) reporting a finicky forecast promising a mix of mostly sunny skies and a 30 percent chance of thunderstorms cropping up after 3 p.m. According to the latest update from the NWS, daytime highs will hover near a balmy 92 degrees, while light winds will shift westerly in the morning, bringing a refreshing touch to the potentially steamy atmosphere.

The outlook for tonight tapers off with a lower 20 percent chance of showers before 8 p.m., followed by mostly cloudy conditions setting in as temperatures dip to a more comfortable low around 72 degrees. There's also talk of a whisper of a west wind at around 6 mph becoming calm as evening falls. It seems like a night primed for patio lingering, barring those potential early evening drips.

Looking ahead to midweek, there's a small reprieve from the storm roulette. Wednesday and Thursday hold a 20 percent chance of thunderstorms, particularly after lunchtime, with mostly sunny to partly cloudy skies prevailing outside of potential thundery interruptions. Temperatures on these days are expected to be a touch more manageable, peaking near 88 and 89 respectively, according to the NWS detailed forecast. Light northerly winds will keep conditions pleasant enough for St. Louisans to mosey outdoors unfettered by the encumbrance of heavy air.

The Hazardous Weather Outlook section off the NWS update carries a sense of mild intrigue, stating that "There is a chance for thunderstorms through this evening. Some storms may produce locally heavy rainfall and gusty winds." Though the potential for spotter activation is low and not expected at the moment, it's a small reminder to keep an eye on the sky if you're planning outdoor shenanigans. Forewarned is forearmed, as the saying goes—just don't expect any sky-drama to ruin the week entirely.

From Friday through Monday, St. Louis will have sunny days with highs in the mid-90s, reaching slightly higher on Saturday and Sunday. Nights will remain mostly clear, offering cooler conditions after the daytime heat, as per the NWS forecast.