S
M
T
W
T
F
S
30
86°
59°
31
83°
69°
1
93°
70°
2
78°
70°
3
89°
69°
4
88°
70°
5
83°
63°
6
81°
59°
7
80°
56°
8
85°
54°
9
90°
62°
10
88°
70°
11
82°
63°
12
80°
59°
13
85°
69°
14
77°
55°
15
78°
48°
16
85°
56°
17
82°
67°
18
83°
65°
19
75°
59°
20
79°
65°
21
69°
62°
22
62°
55°
23
67°
52°
24
69°
47°
25
76°
50°
26
66°
56°
27
64°
56°
28
68°
59°
29
72°
62°
30
78°
62°
1
82°
61°
2
85°
57°
3
68°
55°
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 68° to 85°, with overnight lows between 55° and 61°. The average high for September is 78° with an average low of 58°. 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.
