S
M
T
W
T
F
S
30
86°
67°
31
88°
66°
1
88°
65°
2
89°
64°
3
89°
63°
4
87°
61°
5
87°
62°
6
86°
61°
7
86°
62°
8
87°
64°
9
88°
66°
10
87°
65°
11
89°
66°
12
86°
62°
13
85°
68°
14
84°
61°
15
83°
60°
16
Hist. Avg.
88°
64°
17
Hist. Avg.
88°
64°
18
Hist. Avg.
88°
64°
19
Hist. Avg.
87°
64°
20
Hist. Avg.
87°
64°
21
Hist. Avg.
87°
64°
22
Hist. Avg.
87°
63°
23
Hist. Avg.
87°
63°
24
Hist. Avg.
87°
63°
25
Hist. Avg.
86°
63°
26
Hist. Avg.
86°
63°
27
Hist. Avg.
86°
63°
28
Hist. Avg.
86°
62°
29
Hist. Avg.
86°
62°
30
Hist. Avg.
86°
62°
1
Hist. Avg.
86°
62°
2
Hist. Avg.
85°
62°
3
Hist. Avg.
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in La Jolla
La Jolla's September 2026 forecast shows daily high temperatures ranging from 83° to 89°, with overnight lows between 60° and 68°. The average high for September is 87° 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 La Jolla. See also: October | November | December.
