S
M
T
W
T
F
S
30
79°
56°
31
76°
61°
1
82°
64°
2
68°
63°
3
85°
66°
4
84°
62°
5
80°
56°
6
76°
53°
7
75°
50°
8
79°
55°
9
81°
68°
10
81°
56°
11
74°
46°
12
76°
57°
13
77°
59°
14
79°
58°
15
77°
60°
16
75°
48°
17
74°
49°
18
73°
50°
19
73°
51°
20
70°
38°
21
73°
53°
22
66°
53°
23
66°
52°
24
67°
52°
25
70°
51°
26
72°
49°
27
67°
45°
28
68°
49°
29
72°
51°
30
73°
51°
1
72°
50°
2
71°
51°
3
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Millbrook
Millbrook's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 38° and 68°. The average high for September is 73° with an average low of 52°. 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 Millbrook. See also: October | November | December.
