S
M
T
W
T
F
S
30
90°
68°
31
91°
69°
1
87°
63°
2
91°
69°
3
90°
70°
4
87°
65°
5
86°
66°
6
78°
61°
7
80°
66°
8
83°
65°
9
84°
65°
10
85°
64°
11
81°
64°
12
85°
65°
13
85°
65°
14
84°
64°
15
86°
66°
16
85°
65°
17
85°
64°
18
77°
64°
19
83°
65°
20
83°
64°
21
84°
64°
22
84°
63°
23
83°
63°
24
84°
62°
25
82°
61°
26
81°
60°
27
82°
62°
28
82°
61°
29
81°
60°
30
82°
60°
1
82°
59°
2
81°
60°
3
82°
60°
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 77° to 91°, with overnight lows between 59° and 70°. The average high for September is 84° with an average low of 64°. 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.
