S
M
T
W
T
F
S
30
85°
65°
31
84°
69°
1
92°
67°
2
89°
70°
3
78°
65°
4
79°
68°
5
76°
50°
6
76°
50°
7
79°
55°
8
80°
69°
9
80°
57°
10
71°
50°
11
75°
50°
12
76°
53°
13
75°
52°
14
73°
50°
15
79°
55°
16
77°
51°
17
72°
54°
18
76°
47°
19
75°
53°
20
75°
53°
21
65°
51°
22
66°
50°
23
68°
51°
24
69°
51°
25
73°
50°
26
71°
50°
27
71°
49°
28
73°
52°
29
73°
52°
30
74°
53°
1
73°
49°
2
72°
46°
3
59°
42°
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 80°, with overnight lows between 42° and 69°. The average high for September is 73° with an average low of 52°. 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.
