S
M
T
W
T
F
S
30
79°
57°
31
80°
58°
1
80°
58°
2
79°
57°
3
79°
50°
4
72°
47°
5
70°
52°
6
71°
56°
7
78°
56°
8
78°
54°
9
77°
55°
10
71°
53°
11
74°
54°
12
76°
56°
13
77°
56°
14
76°
55°
15
77°
52°
16
76°
46°
17
68°
52°
18
75°
45°
19
69°
44°
20
69°
43°
21
63°
41°
22
64°
50°
23
65°
45°
24
65°
42°
25
63°
41°
26
63°
42°
27
65°
49°
28
71°
48°
29
70°
47°
30
67°
47°
1
62°
44°
2
63°
39°
3
60°
41°
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 60° to 80°, with overnight lows between 39° and 58°. The average high for September is 71° with an average low of 49°. 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.
