S
M
T
W
T
F
S
30
95°
73°
31
98°
72°
1
100°
73°
2
101°
73°
3
102°
75°
4
101°
74°
5
101°
73°
6
102°
74°
7
99°
76°
8
94°
71°
9
92°
71°
10
89°
73°
11
91°
72°
12
92°
70°
13
93°
70°
14
95°
70°
15
91°
69°
16
93°
68°
17
92°
71°
18
91°
67°
19
89°
68°
20
86°
62°
21
90°
67°
22
89°
66°
23
88°
66°
24
89°
65°
25
89°
66°
26
88°
66°
27
88°
65°
28
87°
65°
29
87°
64°
30
86°
65°
1
87°
62°
2
85°
56°
3
76°
53°
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 76° to 99°, with overnight lows between 53° and 76°. The average high for September is 89° with an average low of 67°. 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.
