S
M
T
W
T
F
S
30
76°
48°
31
80°
52°
1
78°
49°
2
73°
49°
3
73°
51°
4
80°
47°
5
75°
43°
6
70°
42°
7
69°
44°
8
70°
46°
9
74°
44°
10
69°
40°
11
68°
41°
12
70°
39°
13
73°
43°
14
67°
47°
15
69°
41°
16
Hist. Avg.
76°
42°
17
Hist. Avg.
75°
42°
18
Hist. Avg.
75°
42°
19
Hist. Avg.
74°
42°
20
Hist. Avg.
74°
41°
21
Hist. Avg.
73°
41°
22
Hist. Avg.
73°
40°
23
Hist. Avg.
72°
40°
24
Hist. Avg.
72°
40°
25
Hist. Avg.
71°
39°
26
Hist. Avg.
70°
39°
27
Hist. Avg.
70°
39°
28
Hist. Avg.
69°
38°
29
Hist. Avg.
69°
38°
30
Hist. Avg.
68°
38°
1
Hist. Avg.
68°
37°
2
Hist. Avg.
67°
37°
3
Hist. Avg.
66°
36°
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 67° to 80°, with overnight lows between 39° and 52°. The average high for September is 73° with an average low of 45°. 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.
