S
M
T
W
T
F
S
30
92°
66°
31
91°
68°
1
92°
69°
2
93°
70°
3
91°
69°
4
92°
69°
5
91°
68°
6
84°
68°
7
85°
67°
8
86°
65°
9
86°
63°
10
85°
62°
11
84°
62°
12
84°
61°
13
85°
60°
14
83°
62°
15
83°
60°
16
84°
62°
17
85°
61°
18
84°
60°
19
83°
61°
20
83°
63°
21
85°
66°
22
86°
67°
23
89°
65°
24
Hist. Avg.
85°
62°
25
Hist. Avg.
85°
62°
26
Hist. Avg.
84°
62°
27
Hist. Avg.
84°
62°
28
Hist. Avg.
84°
61°
29
Hist. Avg.
84°
61°
30
Hist. Avg.
84°
61°
1
Hist. Avg.
83°
61°
2
Hist. Avg.
83°
60°
3
Hist. Avg.
83°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Arcadia
Arcadia's September 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 60° 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.