S
M
T
W
T
F
S
30
63°
40°
31
69°
43°
1
78°
46°
2
76°
46°
3
69°
44°
4
62°
39°
5
56°
38°
6
59°
39°
7
63°
40°
8
60°
39°
9
60°
39°
10
77°
47°
11
63°
43°
12
60°
40°
13
60°
41°
14
59°
38°
15
64°
44°
16
61°
44°
17
60°
43°
18
57°
40°
19
56°
38°
20
56°
35°
21
57°
33°
22
57°
35°
23
56°
35°
24
64°
37°
25
67°
41°
26
66°
44°
27
63°
43°
28
56°
40°
29
55°
36°
30
53°
36°
1
53°
38°
2
56°
37°
3
53°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cochrane
Cochrane's September 2026 forecast shows daily high temperatures ranging from 53° to 78°, with overnight lows between 33° and 47°. The average high for September is 61° with an average low of 40°. 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 Cochrane. See also: October | November | December.