The weather service said that such weather could be formed due to the activation of atmospheric fronts due to contrasts of air masses from the Arctic and continental regions of Asia.
Night frosts ranging from -1 ° C to - 5 ° C are possible from June 20 to June 21 in such regions as the Perm and Altai Territories, as well as the Chelyabinsk, Tyumen, Sverdlovsk, Novosibirsk, Tomsk Regions.
Earlier, Newinform with reference to the Ministry of Emergency Situations reported on the expected increase in wind up to 20 m / s in Primorye.