Ten people died of cold in Poland on Sunday. The bodies of three migrants, two Iraqi and one Somali, were found near the Turkish-Bulgarian border.
Deaths have also been reported in Italy, the Czech Republic and Ukraine.
Dozens of flights have been halted. In Turkey, the Bosphorus is closed to shipping after a snowstorm. Even Greece's islands are covered in snow.
In Serbia, all river transport is suspended on the Danube.
Temperatures in some regions of Russia have plunged below -40C (-40F).
(Excerpts : BBC)