St. Louis weather from FOX 2 Meteorologist Linh Truong:

ST. LOUIS – Mostly sunny skies Tuesday with high temperatures in the low-50s. Cold air moves in by Wednesday.

It will be very cold Thursday morning with temps in the single digits. It will stay cold throughout the day Thursday with highs in the teens.

Single digits come again Friday morning with afternoon highs in the 20s. It will be slightly warmer over the weekend.