S
M
T
W
T
F
S
30
93°
69°
31
94°
70°
1
91°
68°
2
93°
66°
3
91°
66°
4
92°
63°
5
88°
61°
6
88°
66°
7
92°
68°
8
91°
69°
9
92°
69°
10
93°
68°
11
90°
67°
12
91°
66°
13
90°
65°
14
91°
66°
15
92°
67°
16
91°
67°
17
Hist. Avg.
88°
65°
18
Hist. Avg.
88°
64°
19
Hist. Avg.
88°
64°
20
Hist. Avg.
88°
64°
21
Hist. Avg.
87°
63°
22
Hist. Avg.
87°
63°
23
Hist. Avg.
87°
63°
24
Hist. Avg.
86°
62°
25
Hist. Avg.
86°
62°
26
Hist. Avg.
86°
62°
27
Hist. Avg.
86°
62°
28
Hist. Avg.
85°
61°
29
Hist. Avg.
85°
61°
30
Hist. Avg.
85°
60°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
84°
60°
3
Hist. Avg.
84°
60°
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 88° to 94°, with overnight lows between 61° and 70°. The average high for September is 91° with an average low of 67°. 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.