S
M
T
W
T
F
S
30
100°
73°
31
105°
81°
1
106°
76°
2
108°
76°
3
106°
81°
4
97°
78°
5
106°
76°
6
106°
77°
7
100°
75°
8
105°
76°
9
103°
77°
10
100°
75°
11
103°
75°
12
101°
77°
13
103°
77°
14
104°
80°
15
105°
77°
16
104°
75°
17
100°
76°
18
98°
76°
19
103°
73°
20
103°
72°
21
99°
76°
22
98°
74°
23
101°
74°
24
96°
74°
25
98°
74°
26
95°
71°
27
98°
73°
28
97°
74°
29
95°
76°
30
95°
77°
1
84°
72°
2
76°
62°
3
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bexar
Bexar's September 2026 forecast shows daily high temperatures ranging from 76° to 98°, with overnight lows between 62° and 77°. The average high for September is 89° with an average low of 72°. 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 Bexar. See also: October | November | December.
