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