S
M
T
W
T
F
S
30
85°
64°
31
86°
63°
1
85°
64°
2
86°
64°
3
86°
63°
4
85°
62°
5
85°
62°
6
86°
64°
7
86°
63°
8
85°
62°
9
76°
61°
10
81°
60°
11
83°
61°
12
84°
61°
13
84°
59°
14
71°
48°
15
71°
57°
16
72°
55°
17
73°
53°
18
83°
58°
19
83°
49°
20
81°
46°
21
70°
49°
22
69°
48°
23
66°
54°
24
71°
50°
25
75°
54°
26
78°
55°
27
77°
56°
28
79°
55°
29
79°
53°
30
77°
42°
1
75°
40°
2
62°
40°
3
63°
46°
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 62° to 86°, with overnight lows between 40° and 64°. The average high for September is 78° with an average low of 55°. 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.