ST. LOUIS, Missouri – The first light of dawn glows over the Gateway Arch this morning, revealing calm skies and crisp air that won’t last long. A gentle south wind is already signaling change, as late-fall warmth begins its brief run before rain chances build heading into Friday.
According to the National Weather Service in St. Louis, the region will stay mostly sunny and dry through Thursday afternoon with highs in the upper 60s to low 70s — ideal for outdoor work or early holiday decorating. Winds will pick up later Thursday, gusting near 25 mph ahead of a weak cold front expected to cross the Mississippi Valley by early Friday.
That front could trigger spotty light rain between Thursday night and Friday morning, mainly along I-70 and I-55 corridors. While rainfall totals look minor, slick roads may slow early commuters across St. Louis County, St. Clair County, and into the Metro East. Behind the front, cooler, drier air will settle in for the weekend with highs dipping to the upper 50s and lows falling toward the upper 30s — a reminder that the region’s mild streak is nearing its end.
Long-range models hint at a broader cool-down across the Midwest heading into Veterans Day and the second week of November, with potential for the season’s first frost south of I-44. Residents planning travel or outdoor ceremonies this weekend should prepare for cooler breezes and possible early-morning chill.
Five-Day Forecast for St. Louis, MO:
Wed: 70/53 – Sunny and mild; south winds to 15 mph.
Thu: 65/55 – Breezy; increasing clouds late.
Fri: 72/45 – Slight chance of early rain; cooler north breeze.
Sat: 67/38 – Mostly sunny; crisp morning air.
Sun: 67/45 – Dry and cool; calm, clear skies.
