S
M
T
W
T
F
S
30
85°
51°
31
86°
56°
1
83°
59°
2
86°
57°
3
88°
57°
4
93°
52°
5
78°
62°
6
82°
62°
7
88°
58°
8
86°
53°
9
83°
52°
10
85°
54°
11
88°
57°
12
92°
58°
13
90°
56°
14
91°
57°
15
92°
60°
16
92°
53°
17
94°
51°
18
97°
52°
19
96°
55°
20
94°
58°
21
94°
59°
22
93°
59°
23
93°
58°
24
92°
54°
25
85°
57°
26
87°
59°
27
88°
57°
28
87°
54°
29
87°
56°
30
88°
56°
1
92°
58°
2
94°
61°
3
94°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dete
Dete's September 2026 forecast shows daily high temperatures ranging from 83° to 97°, with overnight lows between 51° and 61°. The average high for September is 90° with an average low of 56°. 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 Dete. See also: October | November | December.
