S
M
T
W
T
F
S
30
101°
79°
31
100°
77°
1
101°
75°
2
103°
76°
3
106°
77°
4
96°
74°
5
97°
75°
6
100°
74°
7
99°
76°
8
98°
74°
9
98°
76°
10
99°
75°
11
102°
74°
12
101°
76°
13
95°
72°
14
94°
70°
15
97°
72°
16
99°
70°
17
86°
68°
18
82°
69°
19
83°
68°
20
87°
69°
21
88°
69°
22
87°
68°
23
86°
66°
24
87°
68°
25
87°
64°
26
82°
61°
27
79°
57°
28
79°
57°
29
80°
58°
30
81°
59°
1
83°
60°
2
85°
60°
3
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Abilene
Abilene's September 2026 forecast shows daily high temperatures ranging from 78° to 102°, with overnight lows between 55° and 76°. The average high for September is 90° with an average low of 68°. 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 Abilene. See also: October | November | December.