S
M
T
W
T
F
S
30
84°
65°
31
79°
61°
1
71°
59°
2
76°
60°
3
74°
59°
4
78°
60°
5
82°
60°
6
82°
62°
7
72°
64°
8
74°
59°
9
71°
58°
10
82°
60°
11
69°
50°
12
60°
47°
13
62°
46°
14
56°
49°
15
63°
46°
16
60°
47°
17
65°
50°
18
67°
49°
19
64°
48°
20
61°
49°
21
61°
48°
22
63°
47°
23
56°
45°
24
60°
47°
25
68°
48°
26
67°
47°
27
67°
49°
28
66°
46°
29
63°
44°
30
65°
44°
1
56°
39°
2
56°
42°
3
53°
42°
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 53° to 82°, with overnight lows between 39° and 60°. The average high for September is 63° with an average low of 47°. 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.
