Average data for 10 years
1 September
Sunday
+18°
+12°
2 September
Monday
+20°
+13°
3 September
Tuesday
+18°
+11°
4 September
Wednesday
+17°
+11°
5 September
Thursday
+16°
+10°
6 September
Friday
+16°
+11°
7 September
Saturday
+18°
+11°
8 September
Sunday
+17°
+12°
9 September
Monday
+16°
+12°
10 September
Tuesday
+15°
+11°
11 September
Wednesday
+15°
+9°
12 September
today
+13°
+8°
13 September
tomorrow
+13°
+9°
14 September
Saturday
+12°
+8°
15 September
Sunday
+12°
+8°
16 September
Monday
+13°
+8°
17 September
Tuesday
+12°
+7°
18 September
Wednesday
+12°
+7°
19 September
Thursday
+12°
+8°
20 September
Friday
+12°
+8°
21 September
Saturday
+11°
+7°
22 September
Sunday
+9°
+7°
23 September
Monday
+10°
+7°
24 September
Tuesday
+10°
+7°
25 September
Wednesday
+10°
+5°
26 September
Thursday
+10°
+6°
27 September
Friday
+10°
+6°
28 September
Saturday
+11°
+7°
29 September
Sunday
+11°
+8°
30 September
Monday
+12°
+7°
In September, the weather in Sumy is typically warm. Average daily high temperature in September is about 13 degrees above zero. On average, Sumy has 10 cloudy, 8 rainy, 6 sunny, and 6 partly cloudy days in September. The rains are usually light.