S
M
T
W
T
F
S
30
80°
61°
31
77°
58°
1
74°
59°
2
74°
59°
3
75°
60°
4
75°
59°
5
72°
60°
6
72°
64°
7
73°
65°
8
78°
61°
9
73°
58°
10
72°
58°
11
72°
59°
12
71°
60°
13
72°
59°
14
71°
58°
15
72°
63°
16
73°
57°
17
75°
56°
18
73°
56°
19
76°
59°
20
Hist. Avg.
72°
56°
21
Hist. Avg.
72°
56°
22
Hist. Avg.
71°
55°
23
Hist. Avg.
71°
55°
24
Hist. Avg.
70°
55°
25
Hist. Avg.
70°
54°
26
Hist. Avg.
70°
54°
27
Hist. Avg.
69°
53°
28
Hist. Avg.
69°
53°
29
Hist. Avg.
68°
53°
30
Hist. Avg.
68°
52°
1
Hist. Avg.
68°
52°
2
Hist. Avg.
67°
51°
3
Hist. Avg.
67°
51°
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 71° to 80°, with overnight lows between 56° and 65°. The average high for September is 74° 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 Lakeside. See also: October | November | December.
