St. Louis is starting Thursday, October 15, under cloudy skies and sticky air, with temperatures near 68 degrees early and a stormy stretch building through the morning. Showers and thunderstorms are likely much of the day before a sharp cold front turns Friday into the coolest day of fall so far.
Storms Have The Best Chance Before Lunch
Showers and thunderstorms are expected to become more widespread from around 8 a.m. through early afternoon, with the chance of rain near 70%. Patchy fog may develop late Thursday morning, while temperatures climb to about 81 degrees with south winds of 3 to 9 mph.
The severe-weather threat remains low overall, but the National Weather Service says a few storms could produce isolated damaging winds, with a lower potential for a brief tornado. The National Weather Service expects storms to become more scattered later Thursday afternoon and evening.
Cold Front Brings A Fast Temperature Drop
Storm chances linger into Thursday evening before a strong cold front sweeps through overnight. Winds shift northwest as temperatures fall into the 40s by Friday morning.
Friday Feels Like A Different Season
Friday will be partly sunny but blustery, with a high near 57 degrees and northwest winds around 18 mph that could gust to 29 mph. Friday night stays mostly cloudy and drops to about 41 degrees, making jackets a much better bet than Thursday’s summerlike layers.
Sunny Weekend Starts A Gradual Warmup
Saturday brings clear skies and a high near 61 degrees, though temperatures could dip to around 39 Saturday night. Sunshine returns Sunday with a high near 67, followed by a steady warmup into the low and mid-70s Monday and Tuesday, with highs in the low to mid-70s Wednesday.
For commuters and anyone with outdoor plans, Thursday morning through early afternoon is the main window to watch for downpours, fog and thunderstorms. By Friday, the bigger concern is the sudden combination of colder air and strong wind, before a long stretch of dry, calmer weather settles in.
