In Iowa, snow is piled so high that drivers can't see across intersections. In North Dakota a snowblower repair shop was overwhelmed with business as residents braced Thursday for more heavy snow and wind chills as low as 52 F below zero.
 
Since the widespread Midwest snow storm over the Christmas holiday, reports from Nebraska are that some pork production systems are having a hard time getting feed and workers into facilities due to drifting snow and closed roads. There have been reports of multiple hog and poultry barns, at least in Minnesota and Nebraska, that have collapsed due to excessive snow loads. 
 
Also, the extreme weather has prevented many producers from sending hogs to market. While that has tightened supplies and caused packers to push up prices this week, it will also back up hogs into next week and beyond. Warmer and clearer weather is forecast for several parts of the Midwest for next week.  
Currently, dangerously cold wind chills also are cited in parts of South Dakota at minus 40 F, and in northeast Nebraska at minus 27 F, according to the National Weather Service. The same is expected for Friday night. Such temps are not uncommon in Minnesota and Wisconsin, and Thursday night and Friday will feature wind, blowing snow and below zero temperatures.  Five straight days of double-digit subzero low temperatures were recorded by the National Weather Service office in Chanhassen, Minn.

"Temperatures are going to be nose-diving," says Billy Williams, a weather service meteorologist in Sioux Falls, S.D. The winds there are slowing dropping off, but the cold temperatures will compensate for it.

Another 10 inches of snow was expected to drop in Iowa, already buried by more than 2 feet which fell in December; the same scenario that's facing southern Wisconsin. Meanwhile up to 9 inches could fall in southeast North Dakota that forecasters warned would create hazardous zero-visibility driving conditions. Wind gusts of 30 miles per hour were expected in Illinois — along with a foot of snow — while large drifts were anticipated in Nebraska and Iowa.

 
Frigid weather also was gripping the South, where a rare cold snap was expected to bring snow and ice to states from South Carolina to Louisiana. Forecasters have said wind chills at night could drop to near zero in some areas.

The Associated Press contributed to this article.