S
M
T
W
T
F
S
30
89°
56°
31
87°
54°
1
87°
53°
2
83°
52°
3
80°
53°
4
84°
51°
5
85°
47°
6
81°
43°
7
74°
46°
8
76°
49°
9
79°
47°
10
73°
46°
11
74°
49°
12
82°
46°
13
81°
40°
14
72°
39°
15
70°
38°
16
70°
39°
17
71°
43°
18
77°
38°
19
77°
42°
20
70°
45°
21
77°
46°
22
79°
46°
23
78°
45°
24
79°
46°
25
79°
46°
26
78°
45°
27
79°
42°
28
74°
41°
29
67°
42°
30
72°
38°
1
68°
39°
2
68°
41°
3
73°
41°
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 67° to 89°, with overnight lows between 38° and 56°. The average high for September is 77° with an average low of 45°. 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.