S
M
T
W
T
F
S
30
99°
75°
31
99°
75°
1
101°
74°
2
101°
73°
3
102°
76°
4
98°
77°
5
97°
79°
6
97°
72°
7
99°
74°
8
101°
75°
9
100°
76°
10
100°
74°
11
103°
74°
12
101°
76°
13
100°
76°
14
101°
75°
15
101°
76°
16
100°
72°
17
97°
74°
18
92°
76°
19
98°
75°
20
97°
72°
21
98°
72°
22
97°
73°
23
96°
73°
24
95°
73°
25
95°
71°
26
95°
74°
27
97°
72°
28
98°
74°
29
96°
73°
30
91°
66°
1
92°
67°
2
89°
66°
3
90°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Uvalde
Uvalde's September 2026 forecast shows daily high temperatures ranging from 89° to 98°, with overnight lows between 66° and 74°. The average high for September is 94° with an average low of 71°. 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 Uvalde. See also: October | November | December.