St. Louis is starting Thursday under cloudy skies, with morning temperatures around 72 to 74 degrees, but the calm opening is a brief one. The morning drive is expected to stay dry, with showers and thunderstorms increasing through the day and a wetter, stormier stretch taking over tonight.
The high is expected to reach about 88 degrees, with the cold front arriving later. Showers and thunderstorms are expected to increase through the day, according to the National Weather Service.
Heavy Rain Could Complicate The Evening
Thursday night carries an 80% chance of showers and thunderstorms, with cloudy skies and a low near 63. The latest update calls for roughly 1 to 2 inches of rain across the area through Friday, with locally higher totals possible; that could mean ponding on roads, faster runoff in the metro area and rising water on the Missouri and Mississippi rivers.
The weather service is not listing watches, warnings or advisories for the area, but it is monitoring the possibility of flooding if heavier rain bands set up. The update is a more serious turn from Wednesday's forecast, which already pointed to a stormy Thursday and noted heavier rain upstream could affect Missouri and Mississippi River levels later in the weekend and early the next week; today's update adds a quantified 1 to 2 inches of rain through Friday and a more explicit flood possibility.
Friday Brings A Fall-Like Reset
Showers may linger into Friday morning before tapering, with partly sunny skies and a high near 69. North winds around 12 mph could gust to 21 mph, and Friday night should be mostly clear with a low around 52.
Sunny Weekend On Deck
Saturday looks sunny and mild with a high near 72, followed by a sunny Sunday near 75. The dry pattern continues into Monday and Tuesday, both around 71, before temperatures rebound to about 78 Wednesday.
For Thursday, the practical play is simple: expect a warm start, keep rain gear nearby for the afternoon and allow extra time where heavy showers hit. Outdoor plans may fare better after the front passes, but the wettest window is likely to run from Thursday afternoon into Friday morning.
