S
M
T
W
T
F
S
30
80°
45°
31
78°
44°
1
77°
43°
2
78°
44°
3
82°
44°
4
80°
43°
5
79°
43°
6
76°
39°
7
77°
43°
8
82°
44°
9
83°
44°
10
83°
43°
11
82°
43°
12
83°
42°
13
81°
41°
14
73°
34°
15
74°
37°
16
76°
40°
17
80°
41°
18
82°
42°
19
83°
41°
20
81°
41°
21
82°
43°
22
82°
40°
23
78°
39°
24
77°
40°
25
80°
40°
26
80°
41°
27
79°
37°
28
79°
38°
29
76°
37°
30
78°
36°
1
74°
33°
2
67°
28°
3
67°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clio
Clio's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 28° and 45°. The average high for September is 79° with an average low of 40°. 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 Clio. See also: October | November | December.