S
M
T
W
T
F
S
30
90°
74°
31
90°
74°
1
91°
74°
2
91°
75°
3
90°
74°
4
90°
73°
5
91°
75°
6
91°
73°
7
90°
72°
8
91°
73°
9
90°
72°
10
91°
74°
11
89°
72°
12
84°
71°
13
86°
72°
14
89°
73°
15
90°
73°
16
87°
72°
17
87°
73°
18
88°
73°
19
88°
72°
20
89°
72°
21
87°
72°
22
87°
71°
23
86°
71°
24
86°
70°
25
87°
72°
26
87°
71°
27
86°
72°
28
86°
72°
29
87°
70°
30
87°
71°
1
86°
70°
2
86°
70°
3
85°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Arcadia
Arcadia's September 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 70° and 75°. The average high for September is 88° with an average low of 72°. 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 Arcadia. See also: October | November | December.
