S
M
T
W
T
F
S
30
95°
75°
31
97°
76°
1
80°
75°
2
85°
75°
3
87°
73°
4
90°
74°
5
89°
72°
6
89°
73°
7
91°
74°
8
87°
74°
9
89°
72°
10
91°
73°
11
90°
74°
12
91°
73°
13
89°
71°
14
90°
73°
15
87°
68°
16
84°
70°
17
86°
71°
18
86°
69°
19
88°
69°
20
88°
70°
21
87°
71°
22
88°
70°
23
87°
70°
24
86°
69°
25
83°
69°
26
83°
68°
27
82°
65°
28
80°
61°
29
80°
60°
30
81°
61°
1
80°
60°
2
84°
64°
3
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Orange
Orange's September 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 59° and 75°. The average high for September is 86° with an average low of 69°. 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 Orange. See also: October | November | December.