S
M
T
W
T
F
S
30
64°
53°
31
62°
57°
1
64°
54°
2
66°
49°
3
67°
56°
4
68°
58°
5
67°
54°
6
68°
55°
7
65°
53°
8
68°
54°
9
98°
64°
10
81°
62°
11
65°
60°
12
66°
58°
13
69°
54°
14
74°
57°
15
64°
54°
16
65°
56°
17
68°
55°
18
67°
57°
19
65°
55°
20
64°
57°
21
67°
57°
22
69°
57°
23
79°
60°
24
76°
60°
25
73°
61°
26
72°
60°
27
71°
58°
28
74°
59°
29
73°
58°
30
74°
58°
1
77°
59°
2
73°
56°
3
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Morro Bay
Morro Bay's September 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 56° and 61°. The average high for September is 73° 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 Morro Bay. See also: October | November | December.
