S
M
T
W
T
F
S
30
72°
56°
31
74°
54°
1
69°
52°
2
65°
51°
3
65°
52°
4
68°
54°
5
71°
54°
6
73°
55°
7
74°
55°
8
74°
54°
9
72°
54°
10
72°
53°
11
71°
53°
12
72°
52°
13
70°
53°
14
62°
39°
15
60°
41°
16
63°
44°
17
66°
47°
18
65°
40°
19
63°
45°
20
66°
49°
21
69°
49°
22
69°
47°
23
68°
42°
24
63°
43°
25
65°
46°
26
67°
47°
27
67°
42°
28
66°
37°
29
59°
32°
30
55°
40°
1
58°
45°
2
63°
44°
3
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Muskoka Lakes
Muskoka Lakes's September 2026 forecast shows daily high temperatures ranging from 55° to 74°, with overnight lows between 32° and 56°. The average high for September is 67° with an average low of 48°. 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 Muskoka Lakes. See also: October | November | December.
