S
M
T
W
T
F
S
30
99°
74°
31
100°
72°
1
100°
74°
2
102°
74°
3
102°
78°
4
98°
76°
5
100°
73°
6
95°
75°
7
98°
73°
8
101°
73°
9
100°
73°
10
100°
72°
11
99°
75°
12
101°
76°
13
100°
74°
14
99°
74°
15
100°
76°
16
100°
70°
17
97°
71°
18
96°
69°
19
95°
73°
20
99°
71°
21
98°
70°
22
98°
70°
23
96°
71°
24
96°
70°
25
95°
70°
26
95°
71°
27
96°
70°
28
94°
72°
29
90°
69°
30
87°
64°
1
87°
63°
2
90°
60°
3
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Horseshoe Bay
Horseshoe Bay's September 2026 forecast shows daily high temperatures ranging from 85° to 98°, with overnight lows between 60° and 72°. The average high for September is 92° 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 Horseshoe Bay. See also: October | November | December.
