S
M
T
W
T
F
S
30
76°
56°
31
79°
52°
1
80°
50°
2
74°
49°
3
70°
49°
4
71°
50°
5
71°
49°
6
73°
58°
7
79°
58°
8
81°
49°
9
77°
50°
10
72°
48°
11
72°
57°
12
75°
48°
13
78°
46°
14
70°
46°
15
70°
52°
16
72°
55°
17
76°
45°
18
70°
46°
19
69°
47°
20
74°
47°
21
68°
53°
22
68°
54°
23
78°
54°
24
77°
52°
25
75°
53°
26
76°
53°
27
76°
52°
28
75°
52°
29
73°
51°
30
75°
52°
1
76°
41°
2
75°
39°
3
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Riverdale Township
Riverdale Township's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 39° and 58°. The average high for September is 74° with an average low of 50°. 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 Township. See also: October | November | December.
