S
M
T
W
T
F
S
30
70°
46°
31
70°
50°
1
75°
46°
2
72°
52°
3
78°
52°
4
79°
54°
5
81°
52°
6
79°
46°
7
67°
52°
8
75°
50°
9
65°
50°
10
66°
51°
11
67°
52°
12
71°
51°
13
65°
51°
14
74°
46°
15
64°
38°
16
66°
40°
17
60°
39°
18
Hist. Avg.
70°
38°
19
Hist. Avg.
69°
38°
20
Hist. Avg.
69°
37°
21
Hist. Avg.
68°
37°
22
Hist. Avg.
68°
37°
23
Hist. Avg.
67°
36°
24
Hist. Avg.
67°
36°
25
Hist. Avg.
66°
36°
26
Hist. Avg.
66°
35°
27
Hist. Avg.
65°
35°
28
Hist. Avg.
65°
35°
29
Hist. Avg.
64°
34°
30
Hist. Avg.
64°
34°
1
Hist. Avg.
63°
34°
2
Hist. Avg.
62°
33°
3
Hist. Avg.
62°
33°
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 60° to 81°, with overnight lows between 38° and 54°. The average high for September is 71° with an average low of 48°. 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.
