S
M
T
W
T
F
S
30
92°
69°
31
91°
70°
1
92°
70°
2
92°
69°
3
91°
70°
4
93°
70°
5
93°
69°
6
91°
68°
7
90°
63°
8
85°
65°
9
86°
68°
10
90°
63°
11
90°
64°
12
89°
65°
13
88°
66°
14
90°
68°
15
91°
67°
16
88°
63°
17
86°
62°
18
83°
61°
19
82°
65°
20
83°
60°
21
82°
59°
22
81°
60°
23
81°
64°
24
82°
64°
25
84°
63°
26
87°
64°
27
86°
64°
28
86°
63°
29
85°
64°
30
82°
61°
1
81°
62°
2
85°
56°
3
79°
55°
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 79° to 93°, with overnight lows between 55° and 70°. The average high for September is 87° with an average low of 64°. 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.