S
M
T
W
T
F
S
30
92°
72°
31
91°
71°
1
86°
72°
2
86°
71°
3
87°
67°
4
87°
68°
5
88°
69°
6
88°
66°
7
89°
66°
8
89°
67°
9
91°
69°
10
91°
70°
11
91°
62°
12
88°
67°
13
91°
63°
14
90°
62°
15
85°
63°
16
91°
66°
17
91°
67°
18
90°
67°
19
91°
66°
20
90°
65°
21
87°
64°
22
84°
63°
23
82°
63°
24
83°
65°
25
81°
64°
26
82°
64°
27
82°
59°
28
84°
59°
29
86°
60°
30
86°
60°
1
87°
62°
2
87°
55°
3
86°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Riverchase
Riverchase's September 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 53° and 72°. The average high for September is 87° with an average low of 65°. 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 Riverchase. See also: October | November | December.