S
M
T
W
T
F
S
30
71°
46°
31
74°
50°
1
71°
44°
2
69°
43°
3
70°
42°
4
71°
48°
5
70°
42°
6
67°
41°
7
67°
41°
8
68°
42°
9
71°
47°
10
76°
49°
11
73°
48°
12
72°
42°
13
68°
42°
14
67°
42°
15
69°
38°
16
70°
43°
17
75°
42°
18
76°
44°
19
75°
43°
20
75°
45°
21
66°
41°
22
71°
43°
23
73°
43°
24
69°
42°
25
70°
44°
26
72°
47°
27
72°
45°
28
71°
40°
29
63°
36°
30
62°
42°
1
59°
38°
2
57°
37°
3
56°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Vernon
Vernon's September 2026 forecast shows daily high temperatures ranging from 56° to 76°, with overnight lows between 34° and 50°. The average high for September is 69° with an average low of 43°. 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. See also: October | November | December.
