S
M
T
W
T
F
S
30
77°
57°
31
78°
55°
1
76°
54°
2
73°
54°
3
76°
56°
4
77°
55°
5
77°
55°
6
76°
54°
7
77°
54°
8
75°
53°
9
74°
52°
10
74°
53°
11
76°
52°
12
72°
51°
13
65°
48°
14
62°
41°
15
62°
49°
16
63°
48°
17
64°
43°
18
69°
43°
19
75°
38°
20
72°
38°
21
61°
35°
22
59°
36°
23
61°
41°
24
67°
48°
25
68°
48°
26
68°
49°
27
69°
48°
28
68°
42°
29
68°
42°
30
60°
34°
1
63°
33°
2
53°
30°
3
53°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Three Lakes
Three Lakes's September 2026 forecast shows daily high temperatures ranging from 53° to 78°, with overnight lows between 30° and 57°. The average high for September is 69° with an average low of 47°. 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 Three Lakes. See also: October | November | December.
