S
M
T
W
T
F
S
30
96°
71°
31
95°
71°
1
94°
70°
2
95°
72°
3
94°
71°
4
95°
70°
5
94°
69°
6
94°
69°
7
95°
70°
8
Hist. Avg.
92°
67°
9
Hist. Avg.
91°
67°
10
Hist. Avg.
91°
66°
11
Hist. Avg.
91°
66°
12
Hist. Avg.
90°
66°
13
Hist. Avg.
90°
66°
14
Hist. Avg.
90°
65°
15
Hist. Avg.
90°
65°
16
Hist. Avg.
89°
64°
17
Hist. Avg.
89°
64°
18
Hist. Avg.
89°
64°
19
Hist. Avg.
89°
64°
20
Hist. Avg.
88°
63°
21
Hist. Avg.
88°
63°
22
Hist. Avg.
88°
62°
23
Hist. Avg.
88°
62°
24
Hist. Avg.
87°
62°
25
Hist. Avg.
87°
61°
26
Hist. Avg.
87°
61°
27
Hist. Avg.
86°
60°
28
Hist. Avg.
86°
60°
29
Hist. Avg.
86°
60°
30
Hist. Avg.
86°
59°
1
Hist. Avg.
85°
59°
2
Hist. Avg.
85°
58°
3
Hist. Avg.
85°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Delaware Junction
Delaware Junction's September 2026 forecast shows daily high temperatures ranging from 94° to 96°, with overnight lows between 69° and 72°. The average high for September is 95° with an average low of 70°. 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 Delaware Junction. See also: October | November | December.