St. Louis woke up Saturday, March 28, 2026, to clear skies, a backyard chill, and thermometers hovering in the low to mid 30s across most neighborhoods. A Frost Advisory for the city runs until 9 a.m. CDT, and nearby counties remain under Freeze Warnings through the same morning, so cover tender plants and bring containers indoors.
Today: Sunny Skies, Nervous Gardeners
The rest of Saturday will be sunny, with a high near 57°F and light east winds around 3 to 7 mph. Fire danger will be elevated across parts of central and eastern Missouri this afternoon because of dry low-level humidity and breezy conditions, according to the National Weather Service.
Warmup On The Way Into Next Week
Southerly flow pushes temperatures into the upper 60s to near 70°F on Sunday, then into the 80s by Monday and Tuesday, with highs possibly reaching the mid 80s before a cold front arrives late Tuesday into early Wednesday. That front brings a chance of thunderstorms and more widespread rain late Tuesday into Wednesday and a cooldown to the upper 50s on Wednesday.
Timing And What You Should Do
Protect outdoor plants until the advisory ends at 9 a.m. Saturday and delay any planting or plant deliveries until daytime warmth arrives. For local alerts and preparedness tips, the City of St. Louis Emergency Management recommends signing up for NotifySTL and keeping phones charged for later storm chances.
Commute And Weekend Game Plan
Morning commutes should be mostly clear after frost melts, with dry roads by mid-morning. Expect breezier conditions Sunday into Monday with southerly gusts through the week. If you have outdoor events later Tuesday into Wednesday, plan for a higher chance of showers and thunderstorms and have a rain plan ready.
