S
M
T
W
T
F
S
30
81°
68°
31
87°
70°
1
94°
70°
2
94°
71°
3
91°
70°
4
91°
70°
5
88°
68°
6
85°
63°
7
80°
61°
8
79°
60°
9
80°
61°
10
80°
57°
11
76°
55°
12
78°
54°
13
77°
57°
14
78°
54°
15
81°
59°
16
81°
60°
17
80°
59°
18
80°
59°
19
81°
60°
20
81°
59°
21
80°
59°
22
81°
58°
23
80°
58°
24
80°
57°
25
79°
58°
26
79°
56°
27
80°
57°
28
79°
57°
29
78°
56°
30
77°
55°
1
77°
55°
2
76°
54°
3
77°
54°
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 76° to 94°, with overnight lows between 54° and 71°. The average high for September is 81° with an average low of 59°. 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.