S
M
T
W
T
F
S
30
82°
69°
31
78°
71°
1
82°
69°
2
76°
71°
3
83°
73°
4
85°
68°
5
79°
64°
6
75°
64°
7
76°
66°
8
77°
63°
9
75°
64°
10
77°
66°
11
77°
65°
12
78°
64°
13
77°
63°
14
76°
62°
15
72°
61°
16
72°
66°
17
75°
59°
18
70°
57°
19
70°
57°
20
71°
60°
21
75°
64°
22
78°
65°
23
79°
65°
24
78°
62°
25
76°
60°
26
76°
62°
27
77°
63°
28
76°
63°
29
77°
59°
30
69°
55°
1
66°
54°
2
69°
58°
3
74°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in City Line
City Line's September 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 54° and 73°. The average high for September is 76° with an average low of 63°. 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 City Line. See also: October | November | December.
