S
M
T
W
T
F
S
30
78°
68°
31
79°
68°
1
78°
67°
2
79°
67°
3
76°
66°
4
75°
67°
5
75°
66°
6
76°
65°
7
76°
66°
8
78°
68°
9
79°
68°
10
79°
67°
11
78°
68°
12
78°
67°
13
77°
67°
14
72°
66°
15
74°
63°
16
74°
66°
17
78°
65°
18
79°
64°
19
78°
63°
20
78°
62°
21
77°
62°
22
76°
60°
23
74°
61°
24
76°
64°
25
77°
65°
26
78°
66°
27
80°
66°
28
81°
65°
29
79°
61°
30
77°
58°
1
75°
58°
2
72°
59°
3
70°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Otay Mesa West
Otay Mesa West's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 56° and 68°. The average high for September is 77° with an average low of 64°. 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 Otay Mesa West. See also: October | November | December.
