Real winter began in Ukraine in the first ten days of December. In the middle of the ten-day period, intense snowfalls were observed in the western and in some places in the northern regions, almost all over the territory there was sticking of wet snow, the formation of black ice and increased wind. The average regional air temperature for a ten-day period in the eastern, southern, Kirovograd, Poltava and Dnipropetrovsk regions turned out to be 3.9-5.4 °C. In the Chernivtsi, Vinnytsya, Kyiv, Cherkasy, Chernihiv and Sumy regions – by 1.2-3, 0 °С is above the norm, in most western regions it was close to the norm and ranged from plus 6.3 °С in the south to minus 1.3 °С in the west and north.
Within 3-7 days, precipitation of varying amounts and intensity in the form of fog, rain, sleet and snow was observed throughout the country. In the Dnipropetrovsk, Kharkiv and Luhansk regions, the average regional precipitation was close and slightly less than the norm – (7-13 mm). In the Vinnytsya, Khmelnitsky, Chernivtsi, Rivne, Zhytomyr, Volyn and Mykolaiv regions, the amount of precipitation was 127-182% (14-22 mm). In the rest of the country the amount of precipitation ranged from 208 to 344% of the norm (from 18 to 49 mm).
On December 10, in many areas of the west, in certain areas of the Vinnytsya, Kyiv and Chernihiv regions, snow cover was observed from 1 to 7 cm high, in places in the Ternopil, Lvov, Chernivtsi and Kyiv regions – 8-11 cm, in the Ivano-Frankivsk region – up to 21 cm, in the highlands of the Carpathians – 33-69 cm. There was no snow on the fields in the rest of the territory.
At the beginning of the first ten days of December, as a result of a decrease in the average daily air temperature to negative values in the fields of the western, Zhytomyr, Chernihiv, Sumy and Cherkasy regions, the final cessation of the vegetation of winter crops was noted. For a ten-day period, slow growth processes on winter crops were noted in the southern and central regions, while active growth processes ceased in the rest of the country.