S
M
T
W
T
F
S
30
99°
72°
31
99°
72°
1
98°
73°
2
101°
71°
3
100°
75°
4
97°
75°
5
99°
71°
6
97°
73°
7
100°
72°
8
N/A
9
98°
75°
10
97°
75°
11
98°
76°
12
101°
74°
13
100°
73°
14
99°
73°
15
97°
71°
16
93°
69°
17
90°
68°
18
90°
64°
19
86°
63°
20
88°
64°
21
88°
63°
22
88°
62°
23
91°
68°
24
83°
68°
25
91°
68°
26
89°
67°
27
86°
67°
28
87°
66°
29
89°
67°
30
89°
66°
1
88°
66°
2
87°
65°
3
87°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lampasas
Lampasas's September 2026 forecast shows daily high temperatures ranging from 83° to 101°, with overnight lows between 62° and 76°. The average high for September is 91° 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 Lampasas. See also: October | November | December.