Missouri – Frost sparkles on rooftops and car hoods as breath hangs in the air, but the chill won’t last. A sharp temperature rebound is already underway, setting up a dramatic shift for St. Louis as the first full week of 2026 unfolds.
According to the National Weather Service in St. Louis, early-morning temperatures sit in the mid-20s, cold enough for icy patches on untreated pavement. Calm winds limit blowing issues, but bridges and shaded roads may stay slick through the morning hours. Drivers should use caution on I-64, I-70, and I-55 until surfaces warm.
Clouds increase through the day as temperatures climb into the mid-40s. That warming trend accelerates Monday, with sunshine pushing highs near 58. Jackets come off fast, and snowmelt across lawns and sidewalks raises the risk of flash freezing after dark where moisture lingers.
By Tuesday, the pattern turns noticeably mild. Highs reach the low 60s under mostly sunny skies, a springlike feel for early January. Wednesday stays warm, topping out near 61. For now, winter weather remains quiet, though the warm-to-cool swings can still stress roads and vehicles.
Changes arrive later in the week. Clouds thicken Wednesday night, and rain chances increase Thursday. While no wintry precipitation is expected, wet roads could slow commutes, especially during the morning and evening travel windows. Keep headlights on and allow extra braking distance.
Looking ahead, meteorologists continue tracking a more active winter pattern later this month across the Midwest, with heavier snow possible farther north between January 17 and 30. For St. Louis, above-average temperatures dominate the near term. Daylight steadily improves too, with nearly 40 extra minutes of sun by late January.
Heading out today or early this week? How cold did it feel where you are?
Five-Day Outlook for St. Louis, Missouri
- Today: Increasing clouds, high near 44°F
- Monday: Sunny, high near 58°F
- Tuesday: Mostly sunny, high near 63°F
- Wednesday: Mostly sunny, high near 61°F
- Thursday: Chance of rain, high near 60°F
