S
M
T
W
T
F
S
30
74°
52°
31
77°
55°
1
80°
52°
2
74°
51°
3
73°
55°
4
78°
59°
5
79°
59°
6
79°
55°
7
73°
57°
8
73°
53°
9
77°
57°
10
77°
56°
11
72°
56°
12
74°
57°
13
74°
52°
14
70°
48°
15
68°
48°
16
69°
47°
17
69°
54°
18
72°
53°
19
75°
54°
20
76°
55°
21
69°
48°
22
73°
52°
23
67°
53°
24
74°
46°
25
70°
44°
26
66°
51°
27
66°
46°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
66°
47°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
65°
46°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Alliance
Alliance's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 44° and 59°. The average high for September is 73° with an average low of 53°. 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 Alliance. See also: October | November | December.
