S
M
T
W
T
F
S
30
71°
55°
31
71°
57°
1
72°
58°
2
76°
58°
3
79°
52°
4
80°
58°
5
76°
53°
6
71°
53°
7
77°
57°
8
69°
53°
9
69°
56°
10
71°
57°
11
67°
49°
12
68°
53°
13
68°
54°
14
67°
51°
15
67°
47°
16
66°
47°
17
Hist. Avg.
72°
51°
18
Hist. Avg.
72°
51°
19
Hist. Avg.
71°
50°
20
Hist. Avg.
71°
50°
21
Hist. Avg.
70°
50°
22
Hist. Avg.
70°
50°
23
Hist. Avg.
70°
50°
24
Hist. Avg.
69°
50°
25
Hist. Avg.
69°
49°
26
Hist. Avg.
69°
49°
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 66° to 80°, with overnight lows between 47° and 58°. The average high for September is 71° with an average low of 54°. 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.
