S
M
T
W
T
F
S
30
91°
70°
31
87°
65°
1
86°
58°
2
84°
59°
3
82°
56°
4
82°
58°
5
90°
62°
6
74°
65°
7
82°
70°
8
93°
71°
9
98°
78°
10
97°
78°
11
92°
73°
12
95°
66°
13
91°
63°
14
89°
62°
15
86°
60°
16
89°
62°
17
92°
58°
18
96°
58°
19
96°
57°
20
93°
58°
21
91°
56°
22
89°
57°
23
90°
56°
24
89°
57°
25
89°
51°
26
87°
54°
27
89°
53°
28
86°
48°
29
85°
52°
30
83°
53°
1
82°
51°
2
81°
49°
3
81°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Banning
Banning's September 2026 forecast shows daily high temperatures ranging from 81° to 96°, with overnight lows between 48° and 66°. The average high for September is 89° with an average low of 56°. 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 Banning. See also: October | November | December.