S
M
T
W
T
F
S
30
91°
71°
31
90°
70°
1
91°
71°
2
90°
69°
3
90°
67°
4
89°
67°
5
89°
68°
6
90°
67°
7
89°
68°
8
91°
70°
9
89°
71°
10
93°
72°
11
92°
72°
12
93°
71°
13
94°
72°
14
94°
72°
15
93°
71°
16
92°
71°
17
93°
72°
18
93°
70°
19
92°
69°
20
92°
70°
21
90°
69°
22
92°
64°
23
92°
68°
24
90°
68°
25
91°
64°
26
Hist. Avg.
87°
65°
27
Hist. Avg.
87°
64°
28
Hist. Avg.
86°
64°
29
Hist. Avg.
86°
64°
30
Hist. Avg.
86°
63°
1
Hist. Avg.
86°
63°
2
Hist. Avg.
85°
63°
3
Hist. Avg.
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Schertz
Schertz's September 2026 forecast shows daily high temperatures ranging from 89° to 94°, with overnight lows between 64° and 72°. 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 Schertz. See also: October | November | December.
