S
M
T
W
T
F
S
30
89°
66°
31
88°
65°
1
87°
64°
2
86°
61°
3
86°
64°
4
85°
59°
5
84°
62°
6
85°
61°
7
86°
62°
8
85°
63°
9
85°
63°
10
84°
62°
11
84°
61°
12
80°
61°
13
79°
60°
14
78°
60°
15
78°
61°
16
79°
59°
17
79°
57°
18
80°
57°
19
77°
56°
20
77°
52°
21
75°
51°
22
76°
52°
23
78°
53°
24
79°
57°
25
80°
58°
26
79°
57°
27
79°
56°
28
75°
50°
29
75°
49°
30
73°
50°
1
Hist. Avg.
80°
58°
2
Hist. Avg.
79°
58°
3
Hist. Avg.
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lakesite
Lakesite's September 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 49° and 66°. The average high for September is 81° with an average low of 58°. 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 Lakesite. See also: October | November | December.