S
M
T
W
T
F
S
30
67°
42°
31
65°
43°
1
67°
47°
2
68°
48°
3
66°
47°
4
67°
45°
5
74°
48°
6
69°
47°
7
71°
43°
8
Hist. Avg.
67°
43°
9
Hist. Avg.
67°
43°
10
Hist. Avg.
66°
43°
11
Hist. Avg.
66°
42°
12
Hist. Avg.
65°
42°
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 65° to 74°, with overnight lows between 42° and 48°. The average high for September is 68° with an average low of 46°. 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.
