S
M
T
W
T
F
S
30
83°
61°
31
80°
57°
1
76°
59°
2
81°
56°
3
75°
54°
4
76°
58°
5
82°
60°
6
83°
52°
7
82°
50°
8
73°
59°
9
80°
57°
10
78°
55°
11
76°
59°
12
80°
58°
13
79°
58°
14
80°
59°
15
82°
54°
16
72°
48°
17
70°
51°
18
77°
44°
19
Hist. Avg.
75°
45°
20
Hist. Avg.
74°
45°
21
Hist. Avg.
74°
44°
22
Hist. Avg.
73°
44°
23
Hist. Avg.
73°
44°
24
Hist. Avg.
72°
43°
25
Hist. Avg.
72°
43°
26
Hist. Avg.
71°
42°
27
Hist. Avg.
70°
42°
28
Hist. Avg.
70°
42°
29
Hist. Avg.
69°
41°
30
Hist. Avg.
69°
41°
1
Hist. Avg.
68°
40°
2
Hist. Avg.
68°
40°
3
Hist. Avg.
67°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rapid Valley
Rapid Valley's September 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 44° and 61°. The average high for September is 78° with an average low of 55°. 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 Rapid Valley. See also: October | November | December.
