S
M
T
W
T
F
S
30
91°
72°
31
90°
73°
1
94°
74°
2
94°
74°
3
92°
75°
4
87°
75°
5
87°
73°
6
90°
72°
7
88°
73°
8
89°
70°
9
91°
71°
10
93°
70°
11
94°
72°
12
92°
71°
13
93°
69°
14
91°
70°
15
92°
67°
16
88°
68°
17
85°
70°
18
84°
71°
19
85°
70°
20
87°
70°
21
88°
69°
22
88°
70°
23
87°
69°
24
88°
69°
25
85°
68°
26
86°
69°
27
87°
66°
28
84°
61°
29
81°
60°
30
83°
60°
1
82°
63°
2
82°
64°
3
80°
59°
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 80° to 94°, with overnight lows between 59° and 75°. The average high for September is 87° with an average low of 69°. 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.
