S
M
T
W
T
F
S
30
90°
62°
31
90°
66°
1
89°
65°
2
90°
65°
3
90°
64°
4
91°
66°
5
90°
65°
6
89°
64°
7
88°
61°
8
82°
63°
9
81°
64°
10
80°
63°
11
87°
62°
12
86°
63°
13
88°
63°
14
87°
61°
15
85°
61°
16
77°
53°
17
77°
53°
18
78°
56°
19
82°
52°
20
76°
51°
21
75°
52°
22
75°
53°
23
77°
57°
24
82°
58°
25
82°
59°
26
83°
58°
27
82°
57°
28
80°
53°
29
79°
54°
30
80°
52°
1
78°
51°
2
81°
55°
3
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Miller
Miller's September 2026 forecast shows daily high temperatures ranging from 72° to 91°, with overnight lows between 46° and 66°. The average high for September is 83° with an average low of 59°. 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 Miller. See also: October | November | December.