S
M
T
W
T
F
S
30
68°
41°
31
68°
43°
1
66°
44°
2
66°
43°
3
69°
49°
4
73°
52°
5
72°
41°
6
73°
39°
7
64°
40°
8
63°
41°
9
63°
44°
10
65°
45°
11
64°
42°
12
62°
40°
13
Hist. Avg.
65°
42°
14
Hist. Avg.
64°
41°
15
Hist. Avg.
64°
41°
16
Hist. Avg.
64°
41°
17
Hist. Avg.
63°
40°
18
Hist. Avg.
63°
40°
19
Hist. Avg.
62°
39°
20
Hist. Avg.
62°
39°
21
Hist. Avg.
62°
39°
22
Hist. Avg.
61°
38°
23
Hist. Avg.
61°
38°
24
Hist. Avg.
61°
38°
25
Hist. Avg.
60°
37°
26
Hist. Avg.
60°
37°
27
Hist. Avg.
59°
36°
28
Hist. Avg.
59°
36°
29
Hist. Avg.
59°
36°
30
Hist. Avg.
58°
35°
1
Hist. Avg.
58°
35°
2
Hist. Avg.
57°
34°
3
Hist. Avg.
57°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rivers
Rivers's September 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 39° and 52°. The average high for September is 67° with an average low of 43°. 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 Rivers. See also: October | November | December.