S
M
T
W
T
F
S
30
68°
53°
31
72°
52°
1
80°
54°
2
78°
56°
3
68°
57°
4
66°
53°
5
56°
49°
6
63°
53°
7
64°
51°
8
71°
50°
9
76°
51°
10
63°
50°
11
54°
39°
12
53°
35°
13
61°
40°
14
54°
34°
15
61°
38°
16
65°
41°
17
69°
40°
18
70°
42°
19
71°
44°
20
67°
44°
21
62°
41°
22
60°
39°
23
62°
38°
24
60°
36°
25
53°
41°
26
54°
41°
27
63°
38°
28
52°
39°
29
57°
36°
30
51°
35°
1
53°
36°
2
50°
29°
3
47°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cooking Lake
Cooking Lake's September 2026 forecast shows daily high temperatures ranging from 47° to 71°, with overnight lows between 27° and 44°. The average high for September is 59° with an average low of 38°. 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 Cooking Lake. See also: October | November | December.