S
M
T
W
T
F
S
30
75°
52°
31
76°
59°
1
76°
60°
2
79°
61°
3
79°
54°
4
77°
50°
5
75°
51°
6
74°
50°
7
74°
53°
8
78°
53°
9
79°
58°
10
81°
50°
11
75°
50°
12
73°
56°
13
73°
48°
14
74°
48°
15
70°
53°
16
72°
51°
17
71°
53°
18
74°
46°
19
72°
46°
20
71°
47°
21
74°
46°
22
70°
51°
23
73°
52°
24
77°
54°
25
77°
53°
26
76°
53°
27
76°
52°
28
78°
50°
29
75°
46°
30
71°
52°
1
73°
52°
2
76°
42°
3
74°
40°
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 81°, with overnight lows between 40° and 61°. The average high for September is 75° with an average low of 51°. 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.
