S
M
T
W
T
F
S
30
81°
67°
31
84°
67°
1
89°
65°
2
86°
64°
3
87°
71°
4
90°
72°
5
76°
69°
6
73°
67°
7
74°
65°
8
79°
64°
9
80°
60°
10
80°
58°
11
80°
58°
12
72°
56°
13
70°
49°
14
63°
50°
15
68°
55°
16
72°
51°
17
66°
61°
18
63°
59°
19
62°
57°
20
68°
51°
21
61°
46°
22
61°
43°
23
68°
49°
24
67°
56°
25
68°
53°
26
69°
52°
27
68°
52°
28
68°
54°
29
66°
51°
30
69°
52°
1
71°
53°
2
68°
48°
3
62°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Brownsdale
Brownsdale's September 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 43° and 57°. The average high for September is 66° with an average low of 51°. 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 Brownsdale. See also: October | November | December.