S
M
T
W
T
F
S
30
89°
70°
31
89°
70°
1
88°
69°
2
88°
68°
3
86°
67°
4
88°
71°
5
90°
72°
6
88°
70°
7
88°
67°
8
Hist. Avg.
86°
68°
9
Hist. Avg.
86°
68°
10
Hist. Avg.
85°
68°
11
Hist. Avg.
85°
67°
12
Hist. Avg.
85°
67°
13
Hist. Avg.
85°
67°
14
Hist. Avg.
84°
67°
15
Hist. Avg.
84°
66°
16
Hist. Avg.
84°
66°
17
Hist. Avg.
84°
66°
18
Hist. Avg.
84°
65°
19
Hist. Avg.
83°
65°
20
Hist. Avg.
83°
65°
21
Hist. Avg.
83°
64°
22
Hist. Avg.
82°
64°
23
Hist. Avg.
82°
64°
24
Hist. Avg.
82°
64°
25
Hist. Avg.
82°
63°
26
Hist. Avg.
81°
63°
27
Hist. Avg.
81°
62°
28
Hist. Avg.
81°
62°
29
Hist. Avg.
80°
62°
30
Hist. Avg.
80°
61°
1
Hist. Avg.
80°
61°
2
Hist. Avg.
79°
61°
3
Hist. Avg.
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Riverdale
Riverdale's September 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 67° and 72°. The average high for September is 88° with an average low of 69°. 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 Riverdale. See also: October | November | December.
