S
M
T
W
T
F
S
30
82°
51°
31
72°
50°
1
72°
49°
2
73°
56°
3
74°
56°
4
78°
49°
5
72°
48°
6
71°
55°
7
75°
56°
8
77°
55°
9
78°
56°
10
79°
55°
11
76°
54°
12
70°
53°
13
76°
54°
14
68°
48°
15
67°
47°
16
Hist. Avg.
76°
52°
17
Hist. Avg.
75°
51°
18
Hist. Avg.
75°
51°
19
Hist. Avg.
74°
50°
20
Hist. Avg.
74°
50°
21
Hist. Avg.
74°
50°
22
Hist. Avg.
73°
49°
23
Hist. Avg.
73°
49°
24
Hist. Avg.
72°
49°
25
Hist. Avg.
72°
48°
26
Hist. Avg.
72°
48°
27
Hist. Avg.
71°
48°
28
Hist. Avg.
71°
47°
29
Hist. Avg.
70°
47°
30
Hist. Avg.
70°
46°
1
Hist. Avg.
69°
46°
2
Hist. Avg.
69°
46°
3
Hist. Avg.
68°
45°
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 67° to 82°, with overnight lows between 47° and 56°. The average high for September is 74° with an average low of 52°. 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.