S
M
T
W
T
F
S
30
90°
68°
31
87°
69°
1
98°
73°
2
88°
70°
3
91°
71°
4
91°
71°
5
82°
65°
6
85°
60°
7
83°
60°
8
90°
64°
9
89°
69°
10
90°
68°
11
82°
63°
12
81°
67°
13
85°
65°
14
82°
62°
15
86°
65°
16
83°
59°
17
78°
59°
18
78°
55°
19
77°
55°
20
76°
53°
21
75°
55°
22
78°
59°
23
74°
59°
24
75°
58°
25
75°
58°
26
80°
57°
27
78°
57°
28
78°
56°
29
79°
58°
30
79°
57°
1
78°
57°
2
76°
55°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Arbor
Lake Arbor's September 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 53° and 69°. The average high for September is 80° 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 Lake Arbor. See also: October | November | December.