S
M
T
W
T
F
S
30
89°
66°
31
91°
67°
1
93°
66°
2
92°
66°
3
92°
67°
4
93°
70°
5
93°
69°
6
92°
69°
7
92°
68°
8
91°
69°
9
90°
67°
10
90°
68°
11
89°
67°
12
89°
67°
13
90°
66°
14
89°
67°
15
89°
66°
16
88°
66°
17
85°
65°
18
84°
65°
19
87°
63°
20
81°
64°
21
82°
64°
22
82°
62°
23
83°
64°
24
86°
63°
25
85°
62°
26
86°
62°
27
87°
61°
28
85°
61°
29
84°
60°
30
83°
60°
1
84°
59°
2
85°
61°
3
78°
55°
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 78° to 93°, with overnight lows between 55° and 70°. The average high for September is 87° with an average low of 65°. 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.
