S
M
T
W
T
F
S
30
88°
64°
31
88°
65°
1
86°
58°
2
79°
58°
3
79°
59°
4
80°
57°
5
80°
57°
6
81°
58°
7
84°
62°
8
85°
63°
9
86°
64°
10
86°
62°
11
82°
62°
12
79°
61°
13
84°
62°
14
83°
59°
15
82°
60°
16
82°
58°
17
79°
60°
18
76°
58°
19
73°
50°
20
76°
58°
21
79°
57°
22
Hist. Avg.
78°
54°
23
Hist. Avg.
77°
53°
24
Hist. Avg.
77°
53°
25
Hist. Avg.
76°
52°
26
Hist. Avg.
76°
52°
27
Hist. Avg.
75°
52°
28
Hist. Avg.
74°
51°
29
Hist. Avg.
74°
51°
30
Hist. Avg.
74°
50°
1
Hist. Avg.
73°
50°
2
Hist. Avg.
72°
49°
3
Hist. Avg.
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Apple Valley
Apple Valley's September 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 50° and 65°. The average high for September is 82° 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 Apple Valley. See also: October | November | December.