S
M
T
W
T
F
S
30
80°
54°
31
82°
43°
1
82°
53°
2
83°
49°
3
82°
44°
4
86°
43°
5
86°
52°
6
85°
43°
7
75°
46°
8
81°
40°
9
83°
45°
10
84°
56°
11
83°
50°
12
88°
50°
13
72°
40°
14
73°
42°
15
80°
50°
16
85°
53°
17
85°
53°
18
87°
55°
19
84°
53°
20
86°
52°
21
75°
43°
22
68°
45°
23
68°
39°
24
70°
45°
25
69°
40°
26
71°
42°
27
71°
44°
28
66°
34°
29
63°
33°
30
61°
33°
1
62°
34°
2
63°
32°
3
64°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in River Heights
River Heights's September 2026 forecast shows daily high temperatures ranging from 61° to 88°, with overnight lows between 32° and 56°. The average high for September is 75° with an average low of 44°. 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 River Heights. See also: October | November | December.
