S
M
T
W
T
F
S
30
87°
64°
31
85°
58°
1
83°
57°
2
79°
59°
3
80°
58°
4
80°
58°
5
79°
59°
6
79°
58°
7
78°
57°
8
79°
61°
9
79°
58°
10
77°
57°
11
78°
59°
12
80°
58°
13
79°
57°
14
78°
56°
15
77°
59°
16
78°
55°
17
77°
56°
18
77°
56°
19
75°
60°
20
76°
60°
21
78°
52°
22
73°
52°
23
Hist. Avg.
77°
58°
24
Hist. Avg.
76°
57°
25
Hist. Avg.
76°
57°
26
Hist. Avg.
75°
56°
27
Hist. Avg.
75°
56°
28
Hist. Avg.
75°
56°
29
Hist. Avg.
74°
55°
30
Hist. Avg.
74°
55°
1
Hist. Avg.
73°
54°
2
Hist. Avg.
73°
54°
3
Hist. Avg.
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Vernon
Vernon's September 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 52° and 64°. The average high for September is 79° with an average low of 58°. 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.