S
M
T
W
T
F
S
30
81°
52°
31
77°
49°
1
75°
48°
2
74°
50°
3
74°
50°
4
75°
51°
5
73°
51°
6
72°
54°
7
73°
55°
8
78°
50°
9
73°
48°
10
72°
47°
11
71°
47°
12
72°
49°
13
71°
50°
14
70°
47°
15
70°
52°
16
71°
45°
17
73°
46°
18
71°
46°
19
71°
53°
20
77°
51°
21
Hist. Avg.
72°
46°
22
Hist. Avg.
72°
46°
23
Hist. Avg.
72°
45°
24
Hist. Avg.
71°
45°
25
Hist. Avg.
71°
45°
26
Hist. Avg.
70°
44°
27
Hist. Avg.
70°
44°
28
Hist. Avg.
70°
43°
29
Hist. Avg.
69°
43°
30
Hist. Avg.
69°
42°
1
Hist. Avg.
69°
42°
2
Hist. Avg.
68°
42°
3
Hist. Avg.
68°
41°
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 70° to 81°, with overnight lows between 45° and 55°. The average high for September is 73° with an average low of 50°. 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.