S
M
T
W
T
F
S
30
91°
73°
31
91°
73°
1
90°
72°
2
91°
73°
3
91°
72°
4
86°
72°
5
86°
71°
6
87°
69°
7
87°
67°
8
89°
68°
9
89°
71°
10
90°
71°
11
88°
70°
12
89°
71°
13
89°
70°
14
88°
66°
15
90°
69°
16
89°
69°
17
90°
70°
18
88°
66°
19
88°
65°
20
85°
67°
21
84°
65°
22
85°
64°
23
85°
64°
24
87°
67°
25
88°
67°
26
84°
64°
27
84°
64°
28
86°
65°
29
82°
65°
30
83°
66°
1
83°
65°
2
84°
65°
3
83°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tyler
Tyler's September 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 64° and 73°. The average high for September is 87° 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 Tyler. See also: October | November | December.