S
M
T
W
T
F
S
30
76°
57°
31
62°
49°
1
73°
53°
2
78°
50°
3
72°
55°
4
76°
49°
5
85°
58°
6
70°
61°
7
67°
57°
8
64°
53°
9
71°
49°
10
79°
49°
11
59°
46°
12
54°
36°
13
63°
30°
14
53°
43°
15
56°
41°
16
55°
41°
17
66°
34°
18
64°
48°
19
67°
44°
20
61°
41°
21
68°
36°
22
69°
42°
23
60°
49°
24
75°
52°
25
73°
58°
26
69°
43°
27
62°
46°
28
58°
43°
29
65°
44°
30
62°
42°
1
61°
42°
2
58°
41°
3
53°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Moosomin
Moosomin's September 2026 forecast shows daily high temperatures ranging from 53° to 75°, with overnight lows between 37° and 58°. The average high for September is 64° with an average low of 45°. 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 Moosomin. See also: October | November | December.