S
M
T
W
T
F
S
30
102°
77°
31
102°
77°
1
100°
78°
2
100°
77°
3
95°
76°
4
100°
79°
5
99°
76°
6
100°
76°
7
102°
74°
8
102°
79°
9
101°
82°
10
97°
77°
11
95°
78°
12
103°
80°
13
100°
80°
14
98°
78°
15
99°
79°
16
100°
77°
17
100°
75°
18
92°
72°
19
93°
72°
20
90°
71°
21
89°
69°
22
88°
70°
23
86°
64°
24
90°
70°
25
90°
69°
26
89°
70°
27
89°
69°
28
88°
69°
29
89°
68°
30
88°
68°
1
88°
67°
2
87°
67°
3
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Denton
Denton's September 2026 forecast shows daily high temperatures ranging from 86° to 103°, with overnight lows between 64° and 80°. The average high for September is 92° with an average low of 72°. 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 Denton. See also: October | November | December.
