S
M
T
W
T
F
S
30
65°
49°
31
60°
41°
1
63°
45°
2
62°
43°
3
63°
51°
4
64°
50°
5
62°
50°
6
62°
48°
7
61°
46°
8
56°
48°
9
60°
48°
10
56°
47°
11
56°
47°
12
54°
45°
13
52°
44°
14
51°
40°
15
51°
40°
16
50°
38°
17
50°
45°
18
53°
43°
19
54°
44°
20
56°
43°
21
55°
44°
22
52°
43°
23
50°
42°
24
48°
41°
25
52°
39°
26
49°
41°
27
48°
43°
28
49°
42°
29
50°
36°
30
48°
33°
1
45°
34°
2
46°
38°
3
45°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kuopio
Kuopio's September 2026 forecast shows daily high temperatures ranging from 45° to 65°, with overnight lows between 33° and 51°. The average high for September is 54° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Kuopio. See also: October | November | December.