S
M
T
W
T
F
S
30
72°
52°
31
75°
55°
1
74°
55°
2
79°
56°
3
80°
54°
4
73°
56°
5
74°
49°
6
79°
50°
7
87°
50°
8
93°
54°
9
89°
62°
10
91°
67°
11
76°
58°
12
74°
55°
13
76°
57°
14
84°
51°
15
73°
52°
16
74°
54°
17
72°
58°
18
75°
51°
19
78°
57°
20
73°
57°
21
77°
57°
22
76°
54°
23
85°
57°
24
86°
55°
25
80°
55°
26
78°
54°
27
78°
56°
28
79°
55°
29
79°
55°
30
78°
54°
1
80°
57°
2
78°
51°
3
80°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ventura
Ventura's September 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 51° and 57°. The average high for September is 79° with an average low of 55°. 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 Ventura. See also: October | November | December.