S
M
T
W
T
F
S
30
90°
67°
31
89°
66°
1
88°
65°
2
90°
65°
3
89°
59°
4
89°
57°
5
81°
57°
6
82°
63°
7
87°
61°
8
88°
64°
9
86°
65°
10
87°
64°
11
86°
64°
12
87°
63°
13
86°
60°
14
87°
61°
15
88°
63°
16
78°
60°
17
76°
54°
18
77°
54°
19
Hist. Avg.
82°
59°
20
Hist. Avg.
82°
59°
21
Hist. Avg.
81°
58°
22
Hist. Avg.
81°
58°
23
Hist. Avg.
80°
57°
24
Hist. Avg.
80°
57°
25
Hist. Avg.
80°
57°
26
Hist. Avg.
79°
56°
27
Hist. Avg.
79°
56°
28
Hist. Avg.
78°
55°
29
Hist. Avg.
78°
55°
30
Hist. Avg.
78°
54°
1
Hist. Avg.
77°
54°
2
Hist. Avg.
77°
54°
3
Hist. Avg.
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Winfield
Winfield's September 2026 forecast shows daily high temperatures ranging from 76° to 90°, with overnight lows between 54° and 67°. The average high for September is 86° with an average low of 62°. 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.