S
M
T
W
T
F
S
30
75°
38°
31
77°
41°
1
74°
55°
2
77°
56°
3
72°
51°
4
75°
45°
5
72°
45°
6
75°
40°
7
75°
43°
8
64°
53°
9
80°
54°
10
58°
42°
11
74°
34°
12
74°
47°
13
61°
39°
14
61°
35°
15
61°
35°
16
67°
37°
17
69°
38°
18
51°
27°
19
57°
27°
20
56°
36°
21
54°
28°
22
63°
25°
23
66°
27°
24
67°
32°
25
67°
39°
26
69°
42°
27
70°
36°
28
70°
40°
29
71°
48°
30
62°
48°
1
61°
45°
2
62°
40°
3
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kirkland Lake
Kirkland Lake's September 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 32° and 48°. The average high for September is 66° with an average low of 41°. 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 Kirkland Lake. See also: October | November | December.