S
M
T
W
T
F
S
30
94°
69°
31
85°
60°
1
81°
60°
2
81°
65°
3
87°
66°
4
89°
67°
5
87°
68°
6
88°
64°
7
83°
62°
8
84°
58°
9
79°
53°
10
74°
52°
11
74°
51°
12
76°
58°
13
74°
58°
14
77°
57°
15
78°
56°
16
75°
55°
17
77°
58°
18
77°
56°
19
76°
54°
20
76°
56°
21
77°
56°
22
77°
57°
23
76°
57°
24
77°
56°
25
76°
56°
26
77°
55°
27
76°
54°
28
76°
54°
29
75°
53°
30
75°
55°
1
74°
55°
2
75°
54°
3
74°
52°
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 74° to 89°, with overnight lows between 51° and 68°. The average high for September is 78° with an average low of 57°. 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.