S
M
T
W
T
F
S
30
87°
62°
31
82°
63°
1
81°
62°
2
81°
63°
3
82°
66°
4
80°
61°
5
85°
61°
6
81°
60°
7
80°
59°
8
79°
60°
9
79°
60°
10
82°
64°
11
84°
64°
12
78°
64°
13
78°
64°
14
77°
57°
15
76°
56°
16
Hist. Avg.
79°
60°
17
Hist. Avg.
79°
60°
18
Hist. Avg.
79°
60°
19
Hist. Avg.
78°
59°
20
Hist. Avg.
78°
59°
21
Hist. Avg.
78°
58°
22
Hist. Avg.
77°
58°
23
Hist. Avg.
77°
58°
24
Hist. Avg.
76°
57°
25
Hist. Avg.
76°
57°
26
Hist. Avg.
75°
56°
27
Hist. Avg.
75°
56°
28
Hist. Avg.
75°
56°
29
Hist. Avg.
74°
55°
30
Hist. Avg.
74°
55°
1
Hist. Avg.
73°
54°
2
Hist. Avg.
73°
54°
3
Hist. Avg.
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Riverside Township
Riverside Township's September 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 56° and 66°. The average high for September is 81° with an average low of 62°. 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 Riverside Township. See also: October | November | December.