S
M
T
W
T
F
S
30
88°
74°
31
91°
75°
1
93°
75°
2
93°
72°
3
94°
72°
4
86°
72°
5
85°
72°
6
90°
71°
7
88°
72°
8
89°
71°
9
90°
69°
10
92°
70°
11
92°
71°
12
89°
71°
13
90°
69°
14
88°
68°
15
86°
67°
16
84°
70°
17
84°
69°
18
82°
70°
19
83°
70°
20
84°
69°
21
86°
69°
22
87°
68°
23
88°
69°
24
85°
69°
25
82°
68°
26
81°
68°
27
83°
65°
28
80°
60°
29
80°
59°
30
81°
59°
1
80°
61°
2
82°
61°
3
80°
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 80° to 94°, with overnight lows between 58° and 72°. The average high for September is 86° with an average low of 68°. 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.
