S
M
T
W
T
F
S
30
97°
75°
31
N/A
1
97°
72°
2
97°
74°
3
96°
73°
4
90°
74°
5
93°
73°
6
93°
73°
7
92°
72°
8
93°
71°
9
88°
69°
10
88°
67°
11
91°
66°
12
89°
67°
13
88°
65°
14
87°
66°
15
88°
68°
16
83°
69°
17
82°
68°
18
84°
68°
19
82°
67°
20
80°
67°
21
82°
66°
22
81°
66°
23
83°
66°
24
84°
66°
25
86°
66°
26
83°
65°
27
82°
66°
28
84°
65°
29
79°
64°
30
79°
65°
1
78°
65°
2
78°
64°
3
79°
64°
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 78° to 97°, with overnight lows between 64° and 74°. The average high for September is 86° with an average low of 68°. 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.
