St. Louis is running warm and mostly sunny today, August 5, with a high near 91°F, but showers and thunderstorms are due in after 5 PM CT — so get your Forest Park walk, patio time, or yard work done before then and keep rain gear close by dinnertime.
Today’s Setup
The National Weather Service St. Louis office says a slow-moving cold front is sagging south today, and while the best instability looks bottled up farther south, a few strong to severe storms can’t be ruled out late this afternoon into early evening, with damaging wind gusts the main threat. Skies stay mostly sunny with a south wind at 3 to 7 mph until then. Overnight, the chance of showers and thunderstorms jumps to 80%, with a low around 73°F.
Storm And Flash Flood Watch
This is the bigger story: a flash flood watch is in effect, with localized totals of 3 to 5+ inches possible as rounds of storms line up tonight into Thursday morning. The Weather Prediction Center has the middle Mississippi Valley, including St. Louis, under a Slight Risk for excessive rainfall, in part because recent rain has already soaked the ground. Thursday brings more storms before noon, then scattered activity through 3 PM CT, with a high near 85°F and another 80% chance of rain. Avoid driving through flooded low-lying roads, especially near creek crossings.
What To Wear Or Bring
Pack a rain jacket, and men’s sport sandals handle today’s humidity better than sneakers; if you’re near the river, quick dry swim trunks dry fast between downpours. With flooding a real risk overnight, it’s smart to keep a 5-gallon water storage container on hand, and an insulated tumbler 30oz keeps you hydrated in the muggy air between storm bands.
Cardinals, Concerts And Weekend Plans
The Psychedelic Furs play The Pageant tonight — Get tickets on SeatGeek before storms roll through. Thursday, Lynyrd Skynyrd and Foreigner headline Hollywood Casino Amphitheater on the Double Trouble Double Vision Tour; with storm chances still lingering, Find tickets on StubHub and grab a Lynyrd Skynyrd t-shirt for the show. The St. Louis Cardinals host the Colorado Rockies Friday, August 7 at Busch Stadium with a bobblehead giveaway; the forecast keeps storm chances going through Friday night, so tailgaters should watch radar before firing up a portable propane grill and grabbing Official team gear on Fanatics. Looking further out, Train brings the Drops of Jupiter: 25 Years in the Atmosphere tour to Hollywood Casino Amphitheater on August 11.
Dinner Tonight
With the heat and stickiness, skip the stove — a cold Thai noodle salad, build-your-own wrap bar, or smoothie bowls hit the spot. A high-powered blender makes quick work of smoothie bowls, and that insulated tumbler 30oz keeps drinks cold on the patio between rain showers. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Expect additional rounds of showers and storms through Friday night before heat and humidity build back in for the weekend. Once it dries out, it’s a good stretch for the kiddie splash pad or checking today’s UPF 50+ Sun Hoodie deal for sun protection. For updates, check the St. Louis weather forecast or browse outdoor gear deals before your next trip out.

