S
M
T
W
T
F
S
30
66°
54°
31
63°
55°
1
65°
49°
2
70°
57°
3
69°
58°
4
68°
54°
5
68°
54°
6
71°
59°
7
72°
61°
8
71°
60°
9
72°
61°
10
79°
59°
11
76°
58°
12
75°
59°
13
73°
60°
14
72°
56°
15
75°
60°
16
74°
59°
17
75°
59°
18
73°
58°
19
70°
59°
20
75°
59°
21
75°
60°
22
74°
59°
23
73°
59°
24
72°
55°
25
68°
56°
26
68°
55°
27
67°
52°
28
69°
57°
29
73°
58°
30
72°
58°
1
70°
57°
2
74°
58°
3
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cayucos
Cayucos's September 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 49° and 61°. The average high for September is 72° 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 Cayucos. See also: October | November | December.
