S
M
T
W
T
F
S
30
99°
73°
31
95°
74°
1
96°
75°
2
97°
73°
3
95°
70°
4
94°
70°
5
94°
69°
6
95°
70°
7
95°
73°
8
96°
74°
9
97°
75°
10
97°
74°
11
96°
75°
12
97°
75°
13
98°
74°
14
98°
74°
15
97°
73°
16
97°
74°
17
96°
73°
18
96°
73°
19
95°
72°
20
94°
72°
21
95°
71°
22
95°
71°
23
93°
70°
24
Hist. Avg.
92°
69°
25
Hist. Avg.
92°
69°
26
Hist. Avg.
92°
69°
27
Hist. Avg.
91°
68°
28
Hist. Avg.
91°
68°
29
Hist. Avg.
91°
68°
30
Hist. Avg.
91°
68°
1
Hist. Avg.
91°
67°
2
Hist. Avg.
90°
67°
3
Hist. Avg.
90°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cotulla
Cotulla's September 2026 forecast shows daily high temperatures ranging from 93° to 99°, with overnight lows between 69° and 75°. The average high for September is 96° with an average low of 73°. 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 Cotulla. See also: October | November | December.
