S
M
T
W
T
F
S
30
92°
71°
31
92°
70°
1
91°
71°
2
92°
71°
3
91°
69°
4
90°
67°
5
91°
69°
6
90°
71°
7
91°
69°
8
90°
70°
9
88°
70°
10
90°
69°
11
90°
70°
12
89°
69°
13
86°
69°
14
86°
68°
15
85°
69°
16
85°
69°
17
86°
68°
18
85°
68°
19
85°
66°
20
84°
62°
21
84°
63°
22
85°
66°
23
86°
66°
24
84°
65°
25
85°
66°
26
87°
65°
27
87°
66°
28
85°
65°
29
85°
64°
30
87°
65°
1
86°
65°
2
Hist. Avg.
84°
64°
3
Hist. Avg.
84°
64°
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 84° to 92°, with overnight lows between 62° and 71°. The average high for September is 88° 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.
