ST. LOUIS, MO–IL – Low clouds hung thick over the Mississippi River early Saturday, dimming city lights and setting a gray tone for the weekend. The stillness won’t last. A slow-moving system is on track to bring scattered showers across the St. Louis metro and neighboring Illinois counties by late Sunday, setting up a damp start to the week.
According to the National Weather Service in St. Louis, skies will stay cloudy through Saturday with highs near 62°F and light east winds. While conditions remain dry for most of the day, a few sprinkles may develop toward evening across Franklin and St. Clair Counties. Rain chances climb overnight and into Sunday morning as moisture deepens from the south.
By Sunday afternoon, light rain becomes more widespread, particularly along I-70 and into the Metro East. Showers are expected to linger through Monday, with occasional breaks between bands of light rain. Monday’s highs near 61°F will feel cooler under thick cloud cover and steady east winds. Drivers should expect damp roads for the Monday commute, and those with outdoor plans may want to keep umbrellas close through Tuesday.
While this system brings no severe threat, it marks a clear shift toward a wetter, cooler pattern that will carry into Halloween week. By Wednesday, partial sunshine returns before another chance of showers late week.
After all, a chilly November lies ahead — and this gray stretch is only its opening act.
Five-Day Forecast for St. Louis, MO–IL:
Sat: 62/52 – Cloudy; light east breeze.
Sun: 62/51 – Increasing rain chances late.
Mon: 61/52 – Showers likely; damp and breezy.
Tue: 60/46 – Cloudy; lingering light rain possible.
Wed: 58/42 – Partly sunny; cooler midweek trend.
