S
M
T
W
T
F
S
30
97°
74°
31
96°
71°
1
96°
70°
2
95°
69°
3
96°
69°
4
96°
74°
5
97°
72°
6
96°
71°
7
95°
72°
8
94°
71°
9
95°
72°
10
95°
71°
11
94°
68°
12
90°
67°
13
91°
69°
14
91°
68°
15
92°
69°
16
88°
68°
17
89°
68°
18
91°
60°
19
89°
61°
20
83°
61°
21
84°
64°
22
85°
67°
23
90°
67°
24
89°
66°
25
90°
67°
26
91°
66°
27
90°
66°
28
89°
61°
29
90°
63°
30
89°
64°
1
88°
64°
2
89°
64°
3
Hist. Avg.
83°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wilmer
Wilmer's September 2026 forecast shows daily high temperatures ranging from 83° to 97°, with overnight lows between 60° and 74°. The average high for September is 91° with an average low of 67°. 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 Wilmer. See also: October | November | December.
