S
M
T
W
T
F
S
30
97°
65°
31
98°
72°
1
100°
76°
2
100°
77°
3
100°
81°
4
101°
75°
5
103°
77°
6
104°
76°
7
99°
74°
8
102°
68°
9
100°
75°
10
99°
73°
11
91°
72°
12
95°
74°
13
96°
76°
14
95°
74°
15
96°
73°
16
96°
72°
17
93°
70°
18
90°
68°
19
81°
63°
20
83°
62°
21
82°
61°
22
82°
60°
23
86°
66°
24
87°
65°
25
87°
65°
26
86°
66°
27
86°
64°
28
85°
64°
29
85°
63°
30
83°
64°
1
83°
62°
2
82°
62°
3
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brinkley
Brinkley's September 2026 forecast shows daily high temperatures ranging from 81° to 100°, with overnight lows between 60° and 76°. The average high for September is 88° with an average low of 67°. 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 Brinkley. See also: October | November | December.