St. Louis woke up under a blanket of low-lying fog and near-freezing air Monday morning, with St. Louis Downtown Airport (KCPS) reporting fog and mist and a temperature hovering near 32°F. A Dense Fog Advisory is in effect through 9 AM CST Monday, with river valleys and bridges taking the worst hit on visibility. Once the fog finally lifts, southerly winds are set to kick off a rapid warmup, and afternoon highs are expected to climb into the mid-60s.
Fog and Morning Commute
According to the National Weather Service St. Louis, visibility should steadily improve after sunrise, and the advisory is expected to expire around 9 AM CST as the fog thins out. Even so, some stubborn patches may hang on in river valleys through mid-morning. Drivers are urged to use low beams, ease off the gas, and leave extra room on ramps and bridges where the fog can be thickest.
Warmup and Record Watch
Once the sun gets a chance to do its work, a steady southerly flow will keep nudging temperatures higher through the week. Highs are forecast to reach about 66 on Monday, around 65 on Tuesday, and then peak in the low 70s by Wednesday. Forecasters say Wednesday and Thursday offer the best shot at record-level warmth at St. Louis and nearby climate sites, with wind gusts at times in the 20–30 mph range.
Shower Chances Later This Week
The best chance for showers and a few thunderstorms arrives Thursday afternoon and evening, mainly along and east of the Mississippi River. Most days through midweek look dry, but anyone with outdoor plans on Thursday will want to stay tuned, since the timing and exact placement of any storms are still a bit uncertain.
What To Do and Where To Check
For now, the game plan is simple: slow down in the fog, stick with low beams, and then get ready for some surprisingly mild mid-February time at parks and patios once the sun breaks through. For the latest advisory details and any forecast updates, see our earlier look at the overcast start and warmer skies ahead.
