S
M
T
W
T
F
S
30
89°
67°
31
87°
66°
1
85°
65°
2
85°
61°
3
84°
61°
4
83°
60°
5
84°
61°
6
87°
61°
7
87°
65°
8
88°
62°
9
84°
61°
10
88°
63°
11
88°
64°
12
85°
64°
13
88°
63°
14
88°
63°
15
87°
62°
16
88°
63°
17
87°
62°
18
85°
62°
19
84°
61°
20
84°
59°
21
85°
60°
22
85°
59°
23
81°
61°
24
Hist. Avg.
82°
58°
25
Hist. Avg.
81°
57°
26
Hist. Avg.
81°
57°
27
Hist. Avg.
80°
57°
28
Hist. Avg.
80°
56°
29
Hist. Avg.
80°
56°
30
Hist. Avg.
80°
55°
1
Hist. Avg.
79°
55°
2
Hist. Avg.
79°
55°
3
Hist. Avg.
78°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in River Bend
River Bend's September 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 59° and 67°. The average high for September is 86° with an average low of 62°. 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 River Bend. See also: October | November | December.