S
M
T
W
T
F
S
30
72°
54°
31
79°
50°
1
75°
50°
2
73°
53°
3
72°
58°
4
77°
56°
5
79°
55°
6
78°
57°
7
70°
50°
8
68°
50°
9
69°
49°
10
72°
53°
11
76°
56°
12
76°
56°
13
68°
57°
14
68°
58°
15
67°
56°
16
67°
55°
17
68°
54°
18
66°
54°
19
65°
51°
20
66°
48°
21
67°
47°
22
65°
48°
23
66°
49°
24
69°
53°
25
72°
54°
26
72°
52°
27
Hist. Avg.
68°
49°
28
Hist. Avg.
68°
49°
29
Hist. Avg.
68°
48°
30
Hist. Avg.
67°
48°
1
Hist. Avg.
67°
48°
2
Hist. Avg.
66°
48°
3
Hist. Avg.
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Banner
Banner's September 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 47° and 58°. The average high for September is 71° 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 Banner. See also: October | November | December.
