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
79°
48°
8
80°
51°
9
81°
57°
10
87°
62°
11
76°
42°
12
76°
64°
13
79°
59°
14
72°
42°
15
73°
54°
16
78°
60°
17
80°
54°
18
76°
49°
19
70°
50°
20
67°
45°
21
67°
45°
22
68°
46°
23
71°
50°
24
73°
37°
25
64°
43°
26
64°
44°
27
67°
51°
28
73°
47°
29
64°
43°
30
65°
49°
1
66°
48°
2
63°
45°
3
67°
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 63° to 80°, with overnight lows between 37° and 64°. The average high for September is 70° with an average low of 49°. 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.
