S
M
T
W
T
F
S
30
100°
74°
31
96°
67°
1
95°
74°
2
96°
71°
3
99°
68°
4
99°
70°
5
97°
70°
6
95°
72°
7
96°
69°
8
96°
71°
9
96°
68°
10
87°
68°
11
97°
70°
12
103°
75°
13
100°
71°
14
98°
72°
15
95°
68°
16
89°
62°
17
88°
63°
18
82°
58°
19
78°
57°
20
82°
58°
21
83°
60°
22
81°
58°
23
82°
57°
24
81°
53°
25
85°
59°
26
82°
59°
27
82°
58°
28
81°
58°
29
82°
56°
30
83°
56°
1
83°
55°
2
82°
56°
3
83°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Amarillo
Amarillo's September 2026 forecast shows daily high temperatures ranging from 78° to 103°, with overnight lows between 53° and 75°. The average high for September is 86° with an average low of 61°. 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 Amarillo. See also: October | November | December.
