S
M
T
W
T
F
S
30
95°
72°
31
99°
73°
1
99°
72°
2
100°
72°
3
100°
73°
4
99°
73°
5
84°
75°
6
97°
75°
7
97°
73°
8
93°
73°
9
93°
72°
10
95°
73°
11
86°
73°
12
91°
75°
13
95°
72°
14
97°
72°
15
97°
70°
16
93°
72°
17
91°
68°
18
95°
66°
19
99°
70°
20
95°
70°
21
95°
70°
22
95°
70°
23
93°
68°
24
81°
63°
25
84°
59°
26
N/A
27
N/A
28
90°
54°
29
90°
52°
30
93°
54°
1
93°
67°
2
91°
70°
3
86°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Tyler
Tyler's September 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 67° and 71°. The average high for September is 90° with an average low of 69°. 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 Tyler. See also: October | November | December.