S
M
T
W
T
F
S
30
69°
55°
31
73°
53°
1
80°
56°
2
79°
58°
3
71°
58°
4
68°
53°
5
56°
49°
6
64°
51°
7
N/A
8
71°
51°
9
76°
51°
10
62°
46°
11
52°
42°
12
53°
41°
13
60°
45°
14
65°
44°
15
61°
42°
16
65°
43°
17
67°
46°
18
68°
48°
19
70°
48°
20
68°
47°
21
59°
37°
22
56°
48°
23
59°
47°
24
65°
48°
25
67°
48°
26
66°
47°
27
64°
46°
28
56°
44°
29
53°
40°
30
54°
44°
1
53°
42°
2
62°
45°
3
62°
45°
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 52° to 76°, with overnight lows between 37° and 51°. The average high for September is 62° with an average low of 45°. 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.
