S
M
T
W
T
F
S
30
100°
71°
31
98°
80°
1
100°
72°
2
100°
73°
3
101°
72°
4
95°
71°
5
99°
71°
6
102°
72°
7
101°
72°
8
100°
73°
9
99°
74°
10
98°
71°
11
96°
70°
12
97°
71°
13
96°
70°
14
90°
65°
15
92°
69°
16
93°
70°
17
93°
70°
18
92°
69°
19
93°
69°
20
92°
68°
21
92°
69°
22
90°
68°
23
83°
67°
24
88°
67°
25
89°
66°
26
89°
65°
27
90°
66°
28
91°
66°
29
90°
65°
30
90°
65°
1
89°
64°
2
89°
65°
3
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brownwood
Brownwood's September 2026 forecast shows daily high temperatures ranging from 83° to 102°, with overnight lows between 64° and 74°. The average high for September is 94° with an average low of 69°. 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 Brownwood. See also: October | November | December.