S
M
T
W
T
F
S
30
80°
53°
31
77°
54°
1
68°
59°
2
72°
60°
3
79°
61°
4
83°
58°
5
76°
53°
6
72°
49°
7
78°
44°
8
78°
47°
9
77°
57°
10
84°
63°
11
76°
48°
12
75°
42°
13
71°
62°
14
70°
46°
15
70°
40°
16
79°
48°
17
77°
64°
18
76°
56°
19
65°
43°
20
58°
48°
21
65°
48°
22
65°
41°
23
65°
38°
24
65°
44°
25
69°
51°
26
62°
53°
27
64°
52°
28
67°
47°
29
70°
46°
30
71°
48°
1
69°
47°
2
70°
44°
3
63°
48°
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 62° to 71°, with overnight lows between 38° and 53°. The average high for September is 67° with an average low of 47°. 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.