S
M
T
W
T
F
S
30
93°
70°
31
92°
71°
1
92°
69°
2
91°
69°
3
91°
70°
4
90°
66°
5
89°
69°
6
90°
70°
7
91°
69°
8
90°
68°
9
90°
69°
10
90°
69°
11
90°
68°
12
88°
67°
13
85°
68°
14
87°
67°
15
85°
67°
16
85°
66°
17
84°
65°
18
84°
64°
19
85°
66°
20
84°
60°
21
82°
60°
22
83°
61°
23
84°
64°
24
85°
63°
25
86°
64°
26
85°
65°
27
86°
64°
28
82°
63°
29
82°
60°
30
85°
61°
1
80°
57°
2
79°
57°
3
Hist. Avg.
85°
60°
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 79° to 93°, with overnight lows between 57° and 71°. The average high for September is 87° with an average low of 65°. 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.
