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Weather St. Louis, MO

St. Louis Weather Wednesday: Morning Rain Clears, Cloudy High Near 68°F

Best Window Today: 68°F, Chance Rain Showers then Cloudy
Rain Risk Possible
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

Today 68°Chance Rain ...
Thu 73°Mostly Cloudy
Fri 73°Showers And ...
Sat 82°Partly Sunny...
Sun 82°Chance Showe...
Mem 84°Chance Showe...
Tue 87°Chance Showe...

St. Louis is starting Wednesday with a few lingering showers and a high near 68°F — but the rain should wrap up by 9 AM CT, leaving a cool, cloudy afternoon that’s dry enough to get things done.

Today’s Setup

A cold front slipped south of Missouri overnight, pulling temperatures into the mid-50s before sunrise. The National Weather Service is calling for a 30% chance of showers before 9 AM CT, after which skies stay mostly cloudy through the evening. High pressure building over the Great Lakes will keep a northeast wind around 9 mph — think crisp early April, not late May. Grab a light jacket before you head out.

Best Window To Be Outside

Once those morning showers exit, the afternoon is your opening. Overcast but dry conditions should hold through game time at Busch Stadium, where the St. Louis Cardinals host the Pittsburgh Pirates today. Conditions won’t be pretty, but they’ll be manageable. Layer up: a St. Louis Cardinals jersey over a long-sleeve base layer is the move, and a St. Louis Cardinals fitted cap keeps the northeast wind off your head. Tailgating will be cool — low-to-mid 60s — but rain-free by afternoon.

Thursday’s even better: mostly cloudy with a high near 73°F and only a 2% rain chance. The Cardinals and Pirates play again, making Thursday your cleaner day at the ballpark.

Rain Risk: Friday and the Memorial Day Weekend

This is the part that matters for your weekend planning. The National Weather Service is tracking a significant rain event arriving late Thursday night — showers could begin between 1 AM and 4 AM CT Friday, with thunderstorms developing through the day. Friday carries an 85% precipitation chance, and atmospheric moisture (precipitable water) will be running near 2.0 inches. The Weather Prediction Center has flagged the southern half of the St. Louis metro in a marginal risk for excessive rainfall. If you live near the Mississippi or Meramec River floodplains, keep a close eye on updates.

The Memorial Day weekend beyond Friday isn’t offering much relief either — NWS forecasters are tracking repeated rounds of showers and thunderstorms as southwesterly upper-level flow settles over Missouri. Stay flexible on any outdoor plans and check the St. Louis weather forecast for the latest.

Events This Week: Fox, Concerts, and Saturday Night

Thursday’s cloudy skies are no problem indoors — the MJ (Touring) show opens at the Fabulous Fox Theatre on May 21, one of the best stages in the city.

Saturday, May 23 is stacked but comes with a rain caveat. Styx with special guest Cheap Trick plays Ozarks Amphitheater — outdoor, so watch the evening forecast carefully as storm chances increase. Tech N9ne & E-40: STRANGE Wid’ It Tour 2026 hits The Factory the same night (indoors — safer bet). Get tickets on SeatGeek or Find tickets on StubHub before either show sells out.

St. Louis City SC hosts Austin FC at Energizer Park on Saturday too. Same advice: have a rain plan ready.

Rainy Day Dinner Idea

Cool and gray weather calls for something warming on the stove. Load up a programmable slow cooker with chili or beef stew before you leave for the game and walk back into a ready dinner. Prefer the stovetop route? An enameled cast iron Dutch oven is tailor-made for exactly this kind of weather. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.

Next Few Days

  • Thursday: Mostly cloudy, near 73°F — the best day of the stretch; Cardinals game looks good
  • Thursday night: Rain develops after midnight CT, storms possible
  • Friday: Heavy rain likely (85%), marginal excessive rainfall risk for southern areas
  • Memorial Day weekend: Repeated storm chances — plan outdoor events with flexibility

Upcoming Home Games

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

St. Louis Cardinals vs Pittsburgh Pirates
Wed, May 20 · Busch Stadium
St. Louis Cardinals vs Pittsburgh Pirates
Thu, May 21 · Busch Stadium
St. Louis City SC vs Austin FC
Sat, May 23 · Energizer Park

Live Radar — St. Louis Area

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Live weather radar for St. Louis, MO

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