S
M
T
W
T
F
S
30
83°
57°
31
83°
60°
1
87°
61°
2
86°
61°
3
82°
60°
4
86°
61°
5
82°
60°
6
79°
58°
7
83°
59°
8
80°
59°
9
85°
53°
10
79°
58°
11
84°
59°
12
85°
58°
13
84°
59°
14
83°
58°
15
85°
57°
16
76°
57°
17
77°
57°
18
Hist. Avg.
78°
55°
19
Hist. Avg.
77°
54°
20
Hist. Avg.
77°
54°
21
Hist. Avg.
77°
53°
22
Hist. Avg.
76°
53°
23
Hist. Avg.
76°
53°
24
Hist. Avg.
76°
52°
25
Hist. Avg.
75°
52°
26
Hist. Avg.
75°
51°
27
Hist. Avg.
75°
51°
28
Hist. Avg.
74°
51°
29
Hist. Avg.
74°
50°
30
Hist. Avg.
74°
50°
1
Hist. Avg.
73°
49°
2
Hist. Avg.
73°
49°
3
Hist. Avg.
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Denton
Denton's September 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 53° and 61°. The average high for September is 83° with an average low of 59°. 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.