S
M
T
W
T
F
S
30
72°
56°
31
73°
56°
1
72°
55°
2
72°
56°
3
71°
56°
4
71°
57°
5
72°
57°
6
72°
58°
7
73°
58°
8
72°
57°
9
71°
61°
10
72°
61°
11
76°
60°
12
77°
60°
13
77°
61°
14
76°
62°
15
78°
62°
16
77°
61°
17
78°
61°
18
78°
60°
19
77°
61°
20
77°
62°
21
76°
62°
22
78°
61°
23
79°
61°
24
77°
60°
25
71°
57°
26
69°
58°
27
72°
59°
28
72°
60°
29
77°
58°
30
73°
57°
1
70°
58°
2
71°
60°
3
76°
60°
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 69° to 79°, with overnight lows between 55° and 62°. The average high for September is 74° with an average low of 59°. 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.