S
M
T
W
T
F
S
30
92°
72°
31
93°
71°
1
93°
72°
2
90°
72°
3
89°
71°
4
88°
70°
5
88°
69°
6
90°
67°
7
93°
71°
8
93°
71°
9
91°
69°
10
92°
70°
11
92°
69°
12
91°
68°
13
91°
68°
14
90°
67°
15
91°
68°
16
86°
64°
17
88°
68°
18
86°
67°
19
Hist. Avg.
86°
63°
20
Hist. Avg.
86°
63°
21
Hist. Avg.
86°
63°
22
Hist. Avg.
85°
62°
23
Hist. Avg.
85°
62°
24
Hist. Avg.
85°
61°
25
Hist. Avg.
85°
61°
26
Hist. Avg.
84°
61°
27
Hist. Avg.
84°
60°
28
Hist. Avg.
84°
60°
29
Hist. Avg.
84°
59°
30
Hist. Avg.
83°
59°
1
Hist. Avg.
83°
58°
2
Hist. Avg.
83°
58°
3
Hist. Avg.
83°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wisner
Wisner's September 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 64° and 72°. The average high for September is 90° with an average low of 69°. 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 Wisner. See also: October | November | December.