S
M
T
W
T
F
S
30
74°
64°
31
79°
55°
1
79°
49°
2
78°
52°
3
76°
55°
4
79°
58°
5
80°
58°
6
76°
53°
7
71°
52°
8
70°
49°
9
69°
48°
10
66°
47°
11
62°
40°
12
73°
52°
13
70°
52°
14
70°
53°
15
71°
51°
16
70°
51°
17
70°
52°
18
69°
51°
19
66°
50°
20
70°
50°
21
70°
51°
22
69°
50°
23
68°
50°
24
69°
52°
25
69°
50°
26
68°
49°
27
69°
50°
28
68°
48°
29
66°
47°
30
65°
48°
1
66°
49°
2
67°
47°
3
64°
46°
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 62° to 80°, with overnight lows between 40° and 64°. The average high for September is 70° with an average low of 51°. 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.
