S
M
T
W
T
F
S
30
83°
55°
31
84°
58°
1
83°
59°
2
84°
59°
3
83°
54°
4
82°
55°
5
81°
59°
6
83°
59°
7
84°
58°
8
78°
49°
9
74°
55°
10
75°
54°
11
79°
51°
12
79°
49°
13
72°
52°
14
73°
49°
15
72°
47°
16
73°
48°
17
72°
54°
18
71°
48°
19
70°
49°
20
71°
56°
21
72°
52°
22
77°
47°
23
75°
53°
24
74°
54°
25
77°
47°
26
Hist. Avg.
74°
48°
27
Hist. Avg.
74°
47°
28
Hist. Avg.
74°
47°
29
Hist. Avg.
73°
47°
30
Hist. Avg.
73°
47°
1
Hist. Avg.
72°
46°
2
Hist. Avg.
72°
46°
3
Hist. Avg.
71°
46°
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 70° to 84°, with overnight lows between 47° and 59°. The average high for September is 77° with an average low of 53°. 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.
