Average data for 10 years
1 December
Monday
−10°
−15°
2 December
Tuesday
−11°
−17°
3 December
Wednesday
−11°
−14°
4 December
Thursday
−9°
−15°
5 December
Friday
−9°
−13°
6 December
Saturday
−8°
−13°
7 December
Sunday
−10°
−16°
8 December
Monday
−11°
−16°
9 December
Tuesday
−11°
−17°
10 December
Wednesday
−12°
−17°
11 December
Thursday
−12°
−16°
12 December
Friday
−11°
−14°
13 December
Saturday
−11°
−16°
14 December
Sunday
−11°
−15°
15 December
Monday
−11°
−15°
16 December
Tuesday
−12°
−16°
17 December
Wednesday
−12°
−17°
18 December
Thursday
−13°
−16°
19 December
Friday
−11°
−14°
20 December
Saturday
−10°
−16°
21 December
Sunday
−11°
−17°
22 December
Monday
−12°
−18°
23 December
Tuesday
−13°
−17°
24 December
Wednesday
−12°
−19°
25 December
Thursday
−13°
−18°
26 December
Friday
−12°
−17°
27 December
Saturday
−13°
−18°
28 December
Sunday
−12°
−16°
29 December
Monday
−10°
−14°
30 December
Tuesday
−10°
−17°
31 December
Wednesday
−14°
−20°
Cities with similar weather in December
Russia
Omsk
Russia
Kurgan
Russia
Tomsk
Russia
Kemerovo
Kazakhstan
Petropavlovsk
December in Sumy is the snowiest month of the year. In December, the weather in Sumy is typically freezing. Average daily high temperature in December is about 11 degrees below zero. On average, Sumy has 12 cloudy, 11 snowy, 4 sunny, and 4 partly cloudy days in December. The snowfalls are usually light. December as well as January and February is considered the most uncomfortable time to visit Sumy.