S
M
T
W
T
F
S
30
87°
64°
31
90°
67°
1
92°
68°
2
92°
68°
3
93°
67°
4
92°
67°
5
92°
66°
6
91°
66°
7
88°
65°
8
88°
62°
9
86°
63°
10
85°
64°
11
84°
65°
12
85°
67°
13
87°
66°
14
86°
62°
15
86°
60°
16
84°
58°
17
Hist. Avg.
88°
61°
18
Hist. Avg.
88°
61°
19
Hist. Avg.
87°
61°
20
Hist. Avg.
87°
61°
21
Hist. Avg.
87°
61°
22
Hist. Avg.
87°
61°
23
Hist. Avg.
86°
60°
24
Hist. Avg.
86°
60°
25
Hist. Avg.
86°
60°
26
Hist. Avg.
86°
60°
27
Hist. Avg.
85°
60°
28
Hist. Avg.
85°
60°
29
Hist. Avg.
85°
59°
30
Hist. Avg.
84°
59°
1
Hist. Avg.
84°
59°
2
Hist. Avg.
84°
59°
3
Hist. Avg.
84°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lakeside
Lakeside's September 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 58° and 68°. The average high for September is 88° with an average low of 65°. 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 Lakeside. See also: October | November | December.
