S
M
T
W
T
F
S
30
92°
65°
31
92°
65°
1
91°
64°
2
91°
65°
3
90°
65°
4
91°
64°
5
91°
65°
6
90°
64°
7
86°
61°
8
76°
60°
9
77°
61°
10
82°
61°
11
87°
60°
12
87°
60°
13
83°
58°
14
74°
54°
15
74°
58°
16
78°
57°
17
87°
53°
18
76°
48°
19
74°
54°
20
78°
55°
21
82°
54°
22
80°
54°
23
75°
53°
24
71°
53°
25
77°
52°
26
80°
51°
27
82°
40°
28
70°
45°
29
74°
49°
30
75°
50°
1
78°
52°
2
79°
52°
3
81°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cowles
Cowles's September 2026 forecast shows daily high temperatures ranging from 70° to 92°, with overnight lows between 40° and 65°. The average high for September is 81° with an average low of 56°. 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 Cowles. See also: October | November | December.
