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