S
M
T
W
T
F
S
30
74°
52°
31
77°
51°
1
78°
51°
2
75°
48°
3
73°
50°
4
73°
47°
5
74°
45°
6
74°
46°
7
75°
46°
8
74°
47°
9
73°
43°
10
72°
45°
11
74°
44°
12
76°
44°
13
79°
46°
14
79°
43°
15
73°
42°
16
71°
43°
17
72°
44°
18
75°
44°
19
75°
47°
20
78°
45°
21
78°
48°
22
79°
50°
23
79°
48°
24
76°
47°
25
70°
44°
26
74°
45°
27
75°
46°
28
76°
47°
29
72°
46°
30
69°
45°
1
68°
46°
2
68°
43°
3
67°
39°
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 67° to 79°, with overnight lows between 39° and 52°. The average high for September is 74° with an average low of 46°. 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.
