S
M
T
W
T
F
S
30
89°
61°
31
85°
64°
1
89°
67°
2
90°
66°
3
88°
66°
4
82°
64°
5
83°
62°
6
84°
63°
7
87°
65°
8
87°
66°
9
86°
65°
10
87°
64°
11
86°
65°
12
88°
64°
13
88°
64°
14
85°
63°
15
83°
64°
16
87°
64°
17
86°
63°
18
83°
63°
19
80°
62°
20
79°
61°
21
79°
59°
22
82°
55°
23
79°
58°
24
80°
56°
25
83°
58°
26
80°
60°
27
76°
60°
28
80°
58°
29
80°
58°
30
76°
54°
1
74°
49°
2
74°
48°
3
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Antioch
Antioch's September 2026 forecast shows daily high temperatures ranging from 72° to 90°, with overnight lows between 47° and 67°. The average high for September is 83° with an average low of 61°. 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 Antioch. See also: October | November | December.