ST. LOUIS, Mo.–ILL. – Headlights gleam through fog and drizzle across the Mississippi River this morning as the Gateway City wakes under steady rain and mist. The air feels heavy and cool — a true late-October scene — but clearer skies and crisp fall air are just hours away.
According to the National Weather Service in St. Louis, widespread rain will linger through midday before shifting east of the metro area. Winds from the north will pick up to 15–20 mph, with gusts near 30 mph making for a brisk afternoon. Patchy fog may linger through the morning commute, especially along I-70 and I-55, where visibility will occasionally drop below a mile. Drivers should allow extra time and keep headlights on through late morning.
By Thursday, clouds will give way to sun and much drier air. Highs reach the upper 50s, and the end of the workweek turns bright, calm, and seasonably cool. Friday — Halloween — promises one of the best setups of the season: sunny skies, highs near 61°F, and a light breeze. Trick-or-treat temperatures will dip into the upper 40s under mostly clear skies — perfect for layered costumes and outdoor events from Belleville to Chesterfield.
The weekend holds steady with highs in the upper 50s and mild sunshine. Clocks fall back at 2 a.m. Sunday as daylight shortens and November’s chill edges closer — a reminder that winter’s first hints aren’t far behind.
Five-Day Forecast for St. Louis, MO–IL:
Wed: 53/42 – Rain and fog early; breezy north wind.
Thu: 57/41 – Gradual clearing; cool and calm.
Fri: 61/42 – Sunny and mild; ideal trick-or-treat weather.
Sat: 57/39 – Mostly sunny; crisp morning air.
Sun: 61/45 – Mostly sunny; clocks fall back early morning.
