S
M
T
W
T
F
S
30
55°
46°
31
54°
40°
1
53°
46°
2
53°
46°
3
58°
43°
4
59°
44°
5
55°
42°
6
54°
41°
7
55°
42°
8
56°
40°
9
52°
32°
10
51°
37°
11
50°
41°
12
53°
41°
13
53°
40°
14
52°
41°
15
51°
40°
16
51°
39°
17
50°
38°
18
51°
38°
19
49°
37°
20
48°
37°
21
49°
35°
22
51°
35°
23
44°
35°
24
42°
38°
25
Hist. Avg.
44°
33°
26
Hist. Avg.
44°
33°
27
Hist. Avg.
43°
33°
28
Hist. Avg.
43°
32°
29
Hist. Avg.
42°
32°
30
Hist. Avg.
42°
32°
1
Hist. Avg.
41°
31°
2
Hist. Avg.
41°
31°
3
Hist. Avg.
41°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Muonio
Muonio's September 2026 forecast shows daily high temperatures ranging from 42° to 59°, with overnight lows between 32° and 46°. The average high for September is 52° with an average low of 40°. 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 Muonio. See also: October | November | December.