The snow has moved on but dangerous cold settled across Missouri on Monday amid warnings that even a few minutes of exposure was risky.

Gusting winds only made matters worse. By 8 a.m. the temperature in St. Louis had plummeted to minus-7 degrees, making it the coldest day since December 1989.

The bitter cold came a day after heavy snow. The St. Louis region got the worst of it — officially 10.8 inches in the city but up to 15 inches in the suburbs. More snow is in the forecast for mid-week.

Road conditions across the state were improved but still treacherous, and clearing them was a challenge. The cold made road salt less effective, and the wind was whipping the fine, powdery snow back onto cleared pavement.

Chip Somodevilla, Getty Images