S
M
T
W
T
F
S
30
91°
70°
31
93°
69°
1
96°
69°
2
97°
70°
3
97°
71°
4
97°
71°
5
98°
70°
6
98°
72°
7
95°
69°
8
92°
74°
9
94°
67°
10
95°
70°
11
92°
71°
12
88°
70°
13
89°
72°
14
91°
68°
15
92°
69°
16
91°
69°
17
90°
64°
18
89°
62°
19
83°
58°
20
82°
61°
21
84°
56°
22
83°
59°
23
86°
64°
24
87°
65°
25
86°
63°
26
85°
62°
27
85°
62°
28
84°
61°
29
86°
62°
30
85°
62°
1
83°
60°
2
83°
59°
3
84°
60°
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 82° to 95°, with overnight lows between 56° and 72°. The average high for September is 87° with an average low of 64°. 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.