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