S
M
T
W
T
F
S
30
81°
49°
31
83°
51°
1
85°
53°
2
86°
52°
3
88°
55°
4
82°
55°
5
80°
49°
6
80°
50°
7
82°
51°
8
83°
52°
9
82°
54°
10
79°
50°
11
87°
55°
12
88°
52°
13
91°
53°
14
88°
50°
15
85°
45°
16
79°
47°
17
80°
47°
18
80°
45°
19
81°
48°
20
84°
48°
21
84°
47°
22
86°
47°
23
85°
50°
24
85°
49°
25
83°
45°
26
79°
46°
27
80°
44°
28
75°
42°
29
78°
42°
30
79°
43°
1
76°
42°
2
70°
37°
3
74°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Delta
Delta's September 2026 forecast shows daily high temperatures ranging from 70° to 91°, with overnight lows between 37° and 55°. The average high for September is 82° with an average low of 48°. 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 Delta. See also: October | November | December.
