S
M
T
W
T
F
S
30
73°
61°
31
70°
62°
1
72°
61°
2
81°
62°
3
80°
57°
4
77°
54°
5
77°
51°
6
75°
51°
7
76°
47°
8
79°
50°
9
74°
61°
10
74°
48°
11
72°
43°
12
79°
41°
13
78°
54°
14
67°
41°
15
70°
39°
16
76°
51°
17
74°
49°
18
69°
41°
19
63°
40°
20
70°
41°
21
60°
42°
22
62°
39°
23
65°
37°
24
67°
35°
25
70°
41°
26
72°
43°
27
71°
43°
28
68°
45°
29
67°
50°
30
69°
48°
1
68°
47°
2
66°
39°
3
57°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kawartha Lakes
Kawartha Lakes's September 2026 forecast shows daily high temperatures ranging from 57° to 72°, with overnight lows between 35° and 50°. The average high for September is 67° 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 Kawartha Lakes. See also: October | November | December.
