S
M
T
W
T
F
S
30
75°
57°
31
75°
58°
1
76°
57°
2
75°
56°
3
75°
56°
4
76°
57°
5
76°
60°
6
74°
59°
7
74°
59°
8
75°
56°
9
73°
54°
10
74°
53°
11
73°
52°
12
73°
53°
13
74°
53°
14
71°
57°
15
78°
60°
16
78°
61°
17
77°
59°
18
77°
50°
19
75°
49°
20
69°
49°
21
68°
55°
22
69°
57°
23
74°
56°
24
73°
57°
25
74°
46°
26
73°
44°
27
65°
45°
28
63°
46°
29
64°
46°
30
63°
51°
1
63°
52°
2
Hist. Avg.
66°
50°
3
Hist. Avg.
66°
49°
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 63° to 78°, with overnight lows between 44° and 61°. The average high for September is 72° with an average low of 54°. 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.