A rare snowfall was seen across parts of Uruguay on Sunday while graupel resulted in an icy coating across parts of eastern Argentina.
The number of casualties from cold exposure continues to rise as most of Europe experiences freezing temperatures. Dozens of people have been reported dead across the continent - many of them rough sleepers. Among the casualties was a man, 75, in the Netherlands, who fell through the ice while skating on Wednesday morning. He was pronounced dead in hospital.
Even thermometers can't keep up with the plunging temperatures in Russia's remote Yakutia region, which hit minus 67 degrees Celsius (minus 88.6 degrees Fahrenheit) in some areas on Tuesday. In Yakutia, a region of 1 million people about 5,300 kilometers east of Moscow, students routinely go to school even in minus 40 degrees. But school was canceled on Tuesday throughout the region and police ordered parents to keep their children inside.