S
M
T
W
T
F
S
30
80°
54°
31
75°
54°
1
74°
53°
2
74°
53°
3
75°
58°
4
73°
53°
5
78°
53°
6
73°
52°
7
72°
51°
8
73°
52°
9
73°
52°
10
75°
58°
11
77°
57°
12
71°
55°
13
70°
57°
14
76°
56°
15
Hist. Avg.
79°
60°
16
Hist. Avg.
78°
60°
17
Hist. Avg.
78°
60°
18
Hist. Avg.
78°
59°
19
Hist. Avg.
78°
59°
20
Hist. Avg.
77°
58°
21
Hist. Avg.
77°
58°
22
Hist. Avg.
76°
58°
23
Hist. Avg.
76°
57°
24
Hist. Avg.
76°
57°
25
Hist. Avg.
75°
56°
26
Hist. Avg.
75°
56°
27
Hist. Avg.
74°
56°
28
Hist. Avg.
74°
55°
29
Hist. Avg.
74°
55°
30
Hist. Avg.
73°
54°
1
Hist. Avg.
73°
54°
2
Hist. Avg.
72°
54°
3
Hist. Avg.
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rivervale
Rivervale's September 2026 forecast shows daily high temperatures ranging from 70° to 80°, with overnight lows between 51° and 58°. The average high for September is 74° with an average low of 54°. 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 Rivervale. See also: October | November | December.
