S
M
T
W
T
F
S
30
93°
71°
31
92°
66°
1
88°
64°
2
88°
66°
3
89°
68°
4
92°
66°
5
92°
68°
6
91°
68°
7
90°
67°
8
86°
67°
9
90°
62°
10
86°
62°
11
86°
63°
12
87°
61°
13
85°
60°
14
84°
59°
15
85°
60°
16
84°
59°
17
85°
61°
18
88°
65°
19
86°
64°
20
88°
62°
21
87°
58°
22
Hist. Avg.
84°
61°
23
Hist. Avg.
84°
61°
24
Hist. Avg.
84°
60°
25
Hist. Avg.
83°
60°
26
Hist. Avg.
83°
60°
27
Hist. Avg.
83°
59°
28
Hist. Avg.
82°
59°
29
Hist. Avg.
82°
58°
30
Hist. Avg.
82°
58°
1
Hist. Avg.
81°
58°
2
Hist. Avg.
81°
57°
3
Hist. Avg.
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wallace
Wallace's September 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 58° and 71°. The average high for September is 88° with an average low of 64°. 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 Wallace. See also: October | November | December.