S
M
T
W
T
F
S
30
81°
63°
31
81°
63°
1
82°
62°
2
79°
61°
3
81°
58°
4
76°
59°
5
80°
61°
6
75°
59°
7
79°
58°
8
Hist. Avg.
75°
57°
9
Hist. Avg.
75°
57°
10
Hist. Avg.
75°
56°
11
Hist. Avg.
74°
56°
12
Hist. Avg.
74°
56°
13
Hist. Avg.
74°
56°
14
Hist. Avg.
73°
55°
15
Hist. Avg.
73°
55°
16
Hist. Avg.
72°
54°
17
Hist. Avg.
72°
54°
18
Hist. Avg.
72°
54°
19
Hist. Avg.
71°
53°
20
Hist. Avg.
71°
53°
21
Hist. Avg.
70°
53°
22
Hist. Avg.
70°
52°
23
Hist. Avg.
70°
52°
24
Hist. Avg.
69°
52°
25
Hist. Avg.
69°
51°
26
Hist. Avg.
68°
51°
27
Hist. Avg.
68°
50°
28
Hist. Avg.
67°
50°
29
Hist. Avg.
67°
50°
30
Hist. Avg.
66°
49°
1
Hist. Avg.
66°
49°
2
Hist. Avg.
66°
49°
3
Hist. Avg.
65°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rapids
Rapids's September 2026 forecast shows daily high temperatures ranging from 75° to 82°, with overnight lows between 58° and 63°. The average high for September is 79° with an average low of 60°. 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 Rapids. See also: October | November | December.