S
M
T
W
T
F
S
30
88°
74°
31
91°
75°
1
91°
75°
2
90°
74°
3
90°
75°
4
89°
76°
5
90°
75°
6
89°
75°
7
88°
74°
8
89°
74°
9
90°
75°
10
91°
73°
11
87°
72°
12
88°
73°
13
90°
74°
14
91°
74°
15
90°
71°
16
87°
72°
17
88°
73°
18
90°
72°
19
88°
72°
20
87°
73°
21
88°
73°
22
88°
72°
23
86°
73°
24
86°
71°
25
87°
70°
26
86°
71°
27
85°
71°
28
86°
70°
29
86°
70°
30
85°
71°
1
86°
69°
2
87°
68°
3
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Riverbend
Riverbend's September 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 68° and 76°. The average high for September is 88° with an average low of 73°. 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 Riverbend. See also: October | November | December.