S
M
T
W
T
F
S
30
84°
51°
31
75°
53°
1
75°
58°
2
76°
56°
3
79°
52°
4
80°
58°
5
82°
52°
6
81°
49°
7
73°
49°
8
72°
47°
9
72°
50°
10
78°
54°
11
75°
47°
12
72°
47°
13
71°
45°
14
73°
52°
15
77°
50°
16
78°
45°
17
70°
43°
18
68°
43°
19
68°
45°
20
69°
48°
21
66°
50°
22
67°
46°
23
67°
50°
24
68°
43°
25
70°
52°
26
73°
51°
27
74°
41°
28
69°
43°
29
66°
49°
30
70°
50°
1
64°
49°
2
66°
47°
3
63°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in De Sale
De Sale's September 2026 forecast shows daily high temperatures ranging from 63° to 84°, with overnight lows between 40° and 58°. The average high for September is 72° with an average low of 49°. 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 Sale. See also: October | November | December.