S
M
T
W
T
F
S
30
68°
51°
31
79°
45°
1
82°
54°
2
70°
49°
3
68°
45°
4
70°
49°
5
70°
47°
6
74°
51°
7
77°
53°
8
77°
52°
9
74°
51°
10
77°
53°
11
77°
53°
12
74°
52°
13
72°
50°
14
73°
43°
15
75°
46°
16
73°
41°
17
62°
39°
18
62°
38°
19
64°
41°
20
62°
38°
21
60°
36°
22
61°
36°
23
61°
37°
24
59°
35°
25
60°
34°
26
65°
36°
27
69°
44°
28
68°
43°
29
59°
42°
30
60°
34°
1
66°
41°
2
64°
40°
3
66°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Winfield
Winfield's September 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 34° and 54°. The average high for September is 68° with an average low of 44°. 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 Winfield. See also: October | November | December.