S
M
T
W
T
F
S
30
92°
75°
31
89°
76°
1
88°
74°
2
89°
74°
3
88°
75°
4
89°
75°
5
90°
77°
6
90°
76°
7
88°
77°
8
Hist. Avg.
89°
75°
9
Hist. Avg.
89°
75°
10
Hist. Avg.
89°
75°
11
Hist. Avg.
89°
75°
12
Hist. Avg.
89°
74°
13
Hist. Avg.
89°
74°
14
Hist. Avg.
88°
74°
15
Hist. Avg.
88°
74°
16
Hist. Avg.
88°
74°
17
Hist. Avg.
88°
74°
18
Hist. Avg.
88°
73°
19
Hist. Avg.
88°
73°
20
Hist. Avg.
88°
73°
21
Hist. Avg.
87°
73°
22
Hist. Avg.
87°
72°
23
Hist. Avg.
87°
72°
24
Hist. Avg.
87°
72°
25
Hist. Avg.
86°
72°
26
Hist. Avg.
86°
71°
27
Hist. Avg.
86°
71°
28
Hist. Avg.
86°
71°
29
Hist. Avg.
86°
70°
30
Hist. Avg.
85°
70°
1
Hist. Avg.
85°
70°
2
Hist. Avg.
85°
70°
3
Hist. Avg.
85°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in River Ridge
River Ridge's September 2026 forecast shows daily high temperatures ranging from 88° to 92°, with overnight lows between 74° and 77°. The average high for September is 89° with an average low of 75°. 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 Ridge. See also: October | November | December.
