S
M
T
W
T
F
S
30
84°
65°
31
79°
61°
1
74°
59°
2
77°
59°
3
79°
63°
4
82°
65°
5
82°
63°
6
71°
55°
7
70°
58°
8
74°
56°
9
72°
58°
10
70°
55°
11
69°
52°
12
67°
50°
13
68°
51°
14
63°
41°
15
72°
51°
16
71°
51°
17
71°
52°
18
70°
51°
19
71°
50°
20
71°
51°
21
70°
49°
22
70°
49°
23
69°
50°
24
72°
51°
25
71°
50°
26
68°
48°
27
69°
49°
28
68°
48°
29
67°
47°
30
67°
48°
1
68°
47°
2
66°
45°
3
64°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Winnipeg
Winnipeg's September 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 41° and 65°. The average high for September is 71° with an average low of 52°. 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 Winnipeg. See also: October | November | December.
