S
M
T
W
T
F
S
30
84°
52°
31
75°
54°
1
75°
54°
2
76°
59°
3
81°
55°
4
78°
51°
5
74°
56°
6
77°
57°
7
81°
57°
8
80°
56°
9
80°
57°
10
78°
55°
11
75°
57°
12
72°
57°
13
80°
56°
14
78°
55°
15
Hist. Avg.
72°
52°
16
Hist. Avg.
71°
51°
17
Hist. Avg.
71°
51°
18
Hist. Avg.
71°
51°
19
Hist. Avg.
70°
50°
20
Hist. Avg.
70°
50°
21
Hist. Avg.
70°
50°
22
Hist. Avg.
69°
49°
23
Hist. Avg.
69°
49°
24
Hist. Avg.
68°
49°
25
Hist. Avg.
68°
48°
26
Hist. Avg.
68°
48°
27
Hist. Avg.
67°
47°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
66°
47°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
65°
46°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Valley
Valley's September 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 51° and 59°. The average high for September is 78° with an average low of 56°. 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 Valley. See also: October | November | December.
