S
M
T
W
T
F
S
30
88°
63°
31
89°
63°
1
88°
60°
2
89°
61°
3
91°
61°
4
86°
62°
5
86°
62°
6
85°
58°
7
90°
63°
8
91°
63°
9
91°
62°
10
90°
63°
11
91°
63°
12
88°
62°
13
85°
61°
14
83°
60°
15
84°
60°
16
86°
62°
17
90°
64°
18
91°
62°
19
90°
61°
20
90°
62°
21
89°
62°
22
89°
61°
23
86°
60°
24
85°
59°
25
88°
61°
26
88°
62°
27
87°
61°
28
87°
61°
29
84°
57°
30
86°
60°
1
83°
56°
2
77°
52°
3
78°
53°
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 77° to 91°, with overnight lows between 52° and 64°. The average high for September is 87° 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.