S
M
T
W
T
F
S
30
100°
73°
31
100°
75°
1
100°
76°
2
102°
76°
3
103°
76°
4
101°
73°
5
97°
71°
6
99°
72°
7
100°
75°
8
101°
72°
9
100°
71°
10
98°
70°
11
98°
70°
12
98°
71°
13
97°
72°
14
91°
70°
15
85°
67°
16
92°
69°
17
91°
68°
18
82°
68°
19
83°
68°
20
86°
66°
21
87°
67°
22
87°
66°
23
88°
66°
24
86°
65°
25
86°
65°
26
85°
61°
27
79°
56°
28
79°
56°
29
80°
58°
30
81°
59°
1
84°
60°
2
85°
61°
3
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in San Angelo
San Angelo's September 2026 forecast shows daily high temperatures ranging from 79° to 103°, with overnight lows between 54° and 76°. The average high for September is 90° with an average low of 67°. 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 San Angelo. See also: October | November | December.
