S
M
T
W
T
F
S
30
103°
76°
31
104°
78°
1
103°
78°
2
93°
70°
3
89°
70°
4
97°
75°
5
97°
74°
6
96°
74°
7
96°
75°
8
96°
74°
9
95°
72°
10
90°
68°
11
89°
68°
12
93°
71°
13
92°
71°
14
90°
70°
15
89°
70°
16
84°
69°
17
87°
70°
18
90°
70°
19
92°
69°
20
92°
70°
21
91°
70°
22
92°
69°
23
93°
70°
24
92°
70°
25
92°
69°
26
91°
69°
27
91°
68°
28
90°
69°
29
91°
68°
30
91°
68°
1
89°
67°
2
84°
62°
3
84°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Texas Motor Speedway
Texas Motor Speedway's September 2026 forecast shows daily high temperatures ranging from 84° to 104°, with overnight lows between 54° and 78°. The average high for September is 92° with an average low of 70°. 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 Texas Motor Speedway. See also: October | November | December.