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St. Louis, MO skyline — local weather forecast and conditions
St. Louis, MO Photo: Dwayne Pounds
Weather St. Louis, MO

St. Louis Weather Today: Sunny and 90°F Ahead of Wednesday's Storms

Best Window Tuesday: 90°F, Sunny
Rain Risk Elevated
What To Wear / Bring Rain layer, water-resistant shoes, and a backup indoor plan
Useful Links Local forecast, radar, and relevant planning links
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7-Day Forecast

Tue 90°Sunny
Wed 91°Sunny
Thu 88°Showers And ...
Fri 88°Chance Showe...
Sat 90°Chance Showe...
Sun 93°Sunny
Mon 95°Sunny

St. Louis is looking at a sunny, warm Tuesday with a high near 90°F and light southeast wind around 1 to 5 mph, according to the National Weather Service — today is your best outdoor window before a stormier pattern moves in Wednesday. If you’ve got yardwork, a bike ride along the Mississippi River, or a trip to the park on your list, this is the day to do it.

Today’s Setup

Any lingering fog tucked into the river valleys along the Mississippi and Missouri this morning should burn off quickly after sunrise, per NWS forecasters, leaving a mostly sunny sky the rest of the day. Temperatures will run a few degrees warmer than yesterday, with overnight lows dipping to around 70°F under mostly clear skies and southeast wind 2 to 6 mph.

Best Window To Be Outside

Morning through early evening today is prime time — dry, sunny, and rain-free with 0% chance of precipitation. Wednesday holds a similar setup early (sunny, high near 91°F, just a 10% chance of rain), so get your outdoor plans, whether that’s a round at one of the courses near Forest Park or an evening walk near the Gateway Arch grounds, in before Wednesday afternoon.

Rain, Wind, Or Storm Risk

The NWS Area Forecast Discussion flags a slow-moving cold front sliding into the region Wednesday, with showers and thunderstorms increasing by midday and continuing into Thursday morning. A few storms Wednesday afternoon and evening could turn strong to severe, with damaging wind gusts the main threat — worth keeping an eye on if you’ve got evening plans Wednesday. Wednesday night’s probability of precipitation jumps to 65%, with activity likely starting between 7 PM and 1 AM CT.

What To Wear Or Bring

Sunscreen and hydration are the name of the game today with full sun and highs near 90°F. Golfers and anglers heading out should pack a golf towel microfiber for the humidity, and boaters on the rivers should stock up while conditions are calm — West Marine ski vests are a smart pickup before the front arrives. If you’re fishing or spending hours outside, a UPF 50+ Sun Hoodie is a cheap way to avoid a sunburn.

This Week’s Events & Games

Music fans have options: NE-YO & Akon play Hollywood Casino Amphitheater tonight, and The Psychedelic Furs with Living Colour hit The Pageant on Wednesday, Aug. 5 — both good bets for tickets on SeatGeek while the weather’s clear. Corey Kent follows at The Blue Note on Thursday, Aug. 6; find tickets on StubHub if you’re heading downtown. Looking ahead, the Cardinals host the Rockies at Busch Stadium on Sunday, Aug. 9 — grab official team gear on Fanatics now, and check back for a firmer gameday forecast as the date gets closer.

Dinner Tonight

With clear skies and a high near 90°F, tonight is built for the grill — think burgers, steaks, or grilled chicken with corn on the cob. An instant-read meat thermometer takes the guesswork out of temps, and a grill brush and scraper set keeps grates ready to go. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door, including Amazon Fresh groceries for the sides.

Next Few Days

Wednesday starts sunny and warm before showers and thunderstorms move in during the afternoon, some potentially strong with damaging wind gusts. That activity continues into Thursday morning as the front works through. Check the outdoor gear deals page for sun protection and boating essentials while today’s dry stretch lasts.

Upcoming Home Games

Plan around the forecast — grab tickets, gear up, and see kickoff conditions.

St. Louis Cardinals vs Colorado Rockies: Kids Build-A-Bear Fredbird Plush
Sun, Aug 9 · Busch Stadium
Read the gameday forecast →

Live Radar — St. Louis Area

Full interactive radar →
Live weather radar for St. Louis, MO

Radar data from the National Weather Service