S
M
T
W
T
F
S
30
68°
42°
31
68°
52°
1
71°
42°
2
69°
44°
3
69°
43°
4
70°
43°
5
68°
45°
6
68°
49°
7
66°
49°
8
73°
44°
9
75°
42°
10
72°
47°
11
73°
46°
12
74°
47°
13
73°
48°
14
74°
49°
15
73°
48°
16
73°
48°
17
74°
41°
18
71°
37°
19
60°
35°
20
60°
38°
21
Hist. Avg.
63°
42°
22
Hist. Avg.
63°
41°
23
Hist. Avg.
63°
41°
24
Hist. Avg.
62°
41°
25
Hist. Avg.
62°
40°
26
Hist. Avg.
62°
40°
27
Hist. Avg.
61°
40°
28
Hist. Avg.
61°
39°
29
Hist. Avg.
60°
39°
30
Hist. Avg.
60°
39°
1
Hist. Avg.
60°
38°
2
Hist. Avg.
59°
38°
3
Hist. Avg.
59°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Winkler
Winkler's September 2026 forecast shows daily high temperatures ranging from 60° to 75°, with overnight lows between 35° and 52°. The average high for September is 70° 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 Winkler. See also: October | November | December.