S
M
T
W
T
F
S
30
98°
74°
31
95°
69°
1
97°
74°
2
99°
76°
3
100°
76°
4
100°
75°
5
98°
73°
6
98°
71°
7
97°
70°
8
99°
72°
9
98°
71°
10
97°
71°
11
91°
66°
12
90°
67°
13
91°
65°
14
84°
61°
15
89°
67°
16
88°
66°
17
88°
67°
18
89°
67°
19
89°
66°
20
88°
66°
21
89°
65°
22
87°
65°
23
86°
64°
24
84°
63°
25
84°
63°
26
86°
62°
27
85°
63°
28
86°
63°
29
85°
62°
30
85°
62°
1
84°
61°
2
85°
61°
3
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lubbock
Lubbock's September 2026 forecast shows daily high temperatures ranging from 84° to 100°, with overnight lows between 60° 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 Lubbock. See also: October | November | December.