S
M
T
W
T
F
S
30
74°
52°
31
73°
52°
1
74°
57°
2
74°
60°
3
75°
60°
4
82°
59°
5
81°
58°
6
79°
51°
7
76°
51°
8
74°
50°
9
73°
49°
10
72°
49°
11
72°
50°
12
71°
49°
13
75°
54°
14
77°
56°
15
75°
54°
16
72°
52°
17
71°
51°
18
72°
54°
19
73°
46°
20
71°
48°
21
71°
46°
22
75°
44°
23
69°
44°
24
68°
45°
25
68°
50°
26
69°
44°
27
69°
49°
28
68°
49°
29
66°
42°
30
66°
44°
1
67°
50°
2
72°
47°
3
70°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Vernon Valley
Vernon Valley's September 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 42° and 60°. The average high for September is 72° 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 Vernon Valley. See also: October | November | December.
