S
M
T
W
T
F
S
30
82°
63°
31
76°
62°
1
81°
62°
2
79°
58°
3
75°
54°
4
77°
58°
5
81°
60°
6
81°
60°
7
83°
61°
8
83°
61°
9
82°
60°
10
82°
61°
11
75°
58°
12
74°
50°
13
78°
53°
14
75°
49°
15
76°
48°
16
77°
45°
17
72°
48°
18
72°
46°
19
71°
43°
20
69°
44°
21
70°
45°
22
70°
44°
23
72°
45°
24
76°
50°
25
78°
54°
26
78°
52°
27
71°
47°
28
77°
52°
29
71°
42°
30
72°
52°
1
72°
40°
2
77°
39°
3
72°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in De Pue
De Pue's September 2026 forecast shows daily high temperatures ranging from 69° to 83°, with overnight lows between 37° and 63°. The average high for September is 76° with an average low of 52°. 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 De Pue. See also: October | November | December.