S
M
T
W
T
F
S
30
92°
64°
31
94°
65°
1
95°
68°
2
95°
66°
3
94°
66°
4
94°
69°
5
93°
68°
6
93°
68°
7
94°
66°
8
91°
68°
9
87°
67°
10
92°
68°
11
91°
67°
12
92°
67°
13
93°
66°
14
92°
65°
15
90°
62°
16
83°
58°
17
82°
62°
18
85°
62°
19
82°
60°
20
81°
60°
21
80°
59°
22
81°
62°
23
84°
62°
24
85°
63°
25
87°
62°
26
88°
62°
27
87°
60°
28
85°
58°
29
84°
59°
30
85°
58°
1
83°
57°
2
85°
59°
3
86°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cook
Cook's September 2026 forecast shows daily high temperatures ranging from 80° to 95°, with overnight lows between 57° and 69°. The average high for September is 88° with an average low of 63°. 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 Cook. See also: October | November | December.
