S
M
T
W
T
F
S
30
97°
73°
31
96°
71°
1
95°
71°
2
96°
68°
3
95°
68°
4
94°
74°
5
95°
73°
6
96°
71°
7
94°
72°
8
93°
73°
9
95°
73°
10
95°
71°
11
94°
69°
12
91°
66°
13
90°
69°
14
90°
69°
15
89°
68°
16
86°
69°
17
89°
68°
18
87°
60°
19
85°
61°
20
82°
62°
21
83°
62°
22
84°
66°
23
87°
67°
24
88°
66°
25
89°
67°
26
90°
66°
27
88°
66°
28
89°
60°
29
87°
61°
30
80°
63°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
84°
60°
3
Hist. Avg.
83°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brookston
Brookston's September 2026 forecast shows daily high temperatures ranging from 80° to 97°, with overnight lows between 60° and 74°. The average high for September is 90° 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 Brookston. See also: October | November | December.