S
M
T
W
T
F
S
30
85°
67°
31
87°
69°
1
88°
70°
2
87°
70°
3
88°
66°
4
81°
66°
5
82°
69°
6
87°
68°
7
83°
65°
8
84°
64°
9
86°
69°
10
86°
69°
11
85°
60°
12
83°
66°
13
81°
66°
14
84°
68°
15
80°
67°
16
83°
66°
17
84°
67°
18
84°
66°
19
82°
67°
20
83°
58°
21
82°
55°
22
74°
63°
23
74°
64°
24
79°
63°
25
80°
65°
26
80°
57°
27
81°
55°
28
72°
54°
29
71°
57°
30
71°
54°
1
70°
55°
2
70°
60°
3
71°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Riverfront
Riverfront's September 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 54° and 70°. The average high for September is 81° with an average low of 64°. 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 Riverfront. See also: October | November | December.