S
M
T
W
T
F
S
30
73°
46°
31
76°
52°
1
73°
53°
2
76°
48°
3
79°
53°
4
81°
45°
5
77°
45°
6
74°
43°
7
71°
46°
8
70°
51°
9
76°
46°
10
69°
42°
11
68°
40°
12
69°
42°
13
68°
45°
14
67°
39°
15
66°
38°
16
65°
39°
17
64°
37°
18
64°
38°
19
64°
38°
20
65°
39°
21
66°
39°
22
69°
45°
23
70°
45°
24
71°
44°
25
70°
45°
26
68°
37°
27
67°
36°
28
61°
44°
29
61°
41°
30
69°
42°
1
67°
41°
2
62°
33°
3
59°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake
Lake's September 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 33° and 53°. The average high for September is 69° with an average low of 43°. 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. See also: October | November | December.
