S
M
T
W
T
F
S
30
92°
67°
31
92°
67°
1
91°
66°
2
93°
68°
3
92°
68°
4
92°
67°
5
91°
66°
6
91°
60°
7
88°
58°
8
81°
63°
9
82°
64°
10
81°
65°
11
85°
66°
12
88°
66°
13
89°
56°
14
88°
55°
15
81°
54°
16
76°
54°
17
77°
55°
18
79°
59°
19
80°
53°
20
77°
53°
21
76°
57°
22
77°
60°
23
81°
60°
24
84°
62°
25
84°
62°
26
85°
61°
27
84°
59°
28
82°
57°
29
81°
56°
30
80°
56°
1
79°
55°
2
82°
57°
3
74°
47°
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 93°, with overnight lows between 47° and 68°. The average high for September is 84° with an average low of 60°. 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.