Missouri — Warm air rolls across the Mississippi River early, softening January’s edge. Gusts stir dry leaves, pavement stays bare, and the city feels more like early spring than mid-winter. That comfort fades fast.
Weather conditions shift quickly across eastern Missouri and southwest Illinois. After today’s warmth, colder air presses in and resets winter by Thursday. Highs surge into the mid-60s today, nearly 25 degrees above average. Winds increase by afternoon, adding to elevated fire danger as humidity drops.
By tonight, clouds thicken and temperatures fall sharply. A few rain showers arrive late, mainly after midnight. Roads remain wet at times, but impacts stay limited early.
Wednesday turns noticeably colder. Sunshine returns, but highs stall near 40. Northwest winds gust over 20 mph, pulling colder air into the St. Louis metro. By Wednesday night, temperatures drop into the teens, and winter settles back in.
Thursday stays dry and cold, with highs only reaching the mid-30s. Skies remain mostly sunny, but the air feels brisk. By Thursday night, a slight chance of snow develops as another weak system slides through. Accumulation looks light, but slick spots may form toward daybreak.
Friday brings partial sunshine and highs near the mid-40s. Any early flurries fade quickly. Another light rain or snow mix is possible Friday night, followed by colder air again.
Drivers along I-64, I-55, and I-70 should watch for flash freezing late week as daytime melting refreezes after sunset. Keep extra layers ready, and avoid outdoor burning during today’s dry, windy conditions.
How dramatic did today’s temperature swing feel where you live? Share what you’re noticing as winter regains control.
5-Day Weather Outlook – St. Louis, MO
- Today: Increasing clouds, windy, high near 66
- Wednesday: Partly sunny, much colder, high near 40
- Thursday: Mostly sunny, winter cold, high near 34
- Friday: Partly sunny, milder, high near 44
- Saturday: Partly sunny, colder again, high near 32
