S
M
T
W
T
F
S
31
77°
60°
1
78°
61°
2
77°
65°
3
77°
65°
4
76°
64°
5
73°
62°
6
75°
62°
7
81°
60°
8
77°
60°
9
73°
59°
10
75°
65°
11
75°
63°
12
74°
62°
13
74°
64°
14
74°
66°
15
75°
65°
16
78°
61°
17
78°
66°
18
77°
68°
19
76°
65°
20
75°
65°
21
79°
66°
22
79°
64°
23
76°
62°
24
76°
61°
25
74°
60°
26
70°
61°
27
75°
60°
28
76°
58°
29
75°
57°
30
74°
57°
1
74°
56°
2
73°
56°
3
73°
56°
4
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tijuana River Valley
Tijuana River Valley's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Tijuana River Valley. See also: October | November | December.
