S
M
T
W
T
F
S
30
89°
68°
31
88°
65°
1
86°
65°
2
88°
66°
3
90°
68°
4
90°
68°
5
91°
67°
6
90°
64°
7
88°
67°
8
89°
68°
9
85°
66°
10
85°
66°
11
87°
65°
12
88°
66°
13
88°
65°
14
87°
65°
15
87°
66°
16
86°
65°
17
87°
65°
18
86°
64°
19
86°
64°
20
85°
63°
21
85°
63°
22
84°
64°
23
86°
62°
24
85°
62°
25
85°
58°
26
83°
57°
27
84°
61°
28
84°
61°
29
83°
60°
30
82°
60°
1
83°
58°
2
83°
59°
3
79°
60°
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 79° to 91°, with overnight lows between 57° and 68°. The average high for September is 86° 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 Antioch. See also: October | November | December.