S
M
T
W
T
F
S
30
94°
69°
31
94°
69°
1
93°
70°
2
95°
68°
3
93°
69°
4
92°
71°
5
93°
71°
6
91°
72°
7
92°
71°
8
91°
72°
9
92°
73°
10
91°
72°
11
93°
71°
12
94°
72°
13
94°
72°
14
93°
71°
15
93°
71°
16
88°
70°
17
87°
70°
18
86°
71°
19
87°
70°
20
88°
70°
21
87°
69°
22
87°
70°
23
88°
70°
24
87°
69°
25
89°
69°
26
91°
67°
27
92°
66°
28
90°
67°
29
88°
68°
30
90°
66°
1
89°
67°
2
91°
67°
3
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cibolo
Cibolo's September 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 62° and 73°. The average high for September is 91° 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 Cibolo. See also: October | November | December.