St. Louis gets a quick taste of spring Saturday, Feb. 28, 2026, with clear skies in the morning and a fast warmup. Expect mostly sunny conditions with a high near 65°F, a day that feels more like April than late winter. Light rain could move in after about 1 p.m., so an umbrella is a smart backup for afternoon plans. By tonight, temperatures fall sharply to around 31°F as a cold front begins to slide into the region.
Afternoon Winds Could Raise Fire Risk
Those mild temperatures come with some wind. East to south breezes this afternoon will generally run in the 10 to 12 mph range, with gusts up to about 20 mph. Relative humidity may dip into the mid 20s to mid 30s in some spots, which could create brief pockets of elevated fire weather conditions. If you are grilling, burning brush, or dealing with any open flame, use extra caution while those winds are up.
Late Sunday Night Into Monday Snow Risk
The real turn in the story arrives late Sunday night into Monday morning (Sunday night, March 1 into Monday, March 2, 2026), when a stronger cold front brings the best chance for accumulating snow. According to the National Weather Service, snow is likely in some areas, roughly a 70 to 80 percent chance. Most neighborhoods may end up with only a light coating, but a narrow corridor could see 3 to 4 inches where the strongest forcing lines up.
Since pavement will still be warm in many locations, even light accumulations could briefly make roads slick where the heaviest band sets up. If you have early Monday travel plans, the timing of that snow band will matter, so keep an eye on updated forecasts.
Plan Travel And Check Road Conditions
If you have to be on the roads late Sunday into Monday, be prepared for localized travel impacts in spots that catch the heavier snow. Bridges and overpasses are the first to ice up, so treat them with extra respect. Check the MoDOT traveler map before you head out, and give snowplows plenty of room to work since crews will focus on major routes first.
Next Week Turns Wet
After what looks like a lull Monday afternoon, the weather pattern turns active again from Tuesday through the end of the work week. Multiple rounds of widespread rain are expected, along with a chance of thunderstorms. The National Weather Service notes strong southerly moisture transport and above normal atmospheric moisture, so plan for several wet days in a row and keep tabs on forecasts for any flooding concerns in low lying areas.
