S
M
T
W
T
F
S
30
89°
69°
31
90°
68°
1
88°
66°
2
92°
66°
3
90°
65°
4
91°
61°
5
84°
60°
6
84°
61°
7
87°
63°
8
90°
67°
9
90°
67°
10
91°
66°
11
88°
65°
12
87°
64°
13
86°
63°
14
87°
64°
15
89°
65°
16
80°
59°
17
79°
58°
18
Hist. Avg.
82°
60°
19
Hist. Avg.
82°
59°
20
Hist. Avg.
82°
59°
21
Hist. Avg.
81°
58°
22
Hist. Avg.
81°
58°
23
Hist. Avg.
80°
58°
24
Hist. Avg.
80°
57°
25
Hist. Avg.
80°
57°
26
Hist. Avg.
79°
56°
27
Hist. Avg.
79°
56°
28
Hist. Avg.
79°
55°
29
Hist. Avg.
78°
55°
30
Hist. Avg.
78°
55°
1
Hist. Avg.
78°
54°
2
Hist. Avg.
77°
54°
3
Hist. Avg.
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cookson
Cookson's September 2026 forecast shows daily high temperatures ranging from 79° to 92°, with overnight lows between 58° and 69°. 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 Cookson. See also: October | November | December.