S
M
T
W
T
F
S
30
89°
72°
31
83°
70°
1
82°
66°
2
82°
63°
3
82°
63°
4
85°
62°
5
90°
69°
6
85°
67°
7
91°
67°
8
92°
69°
9
92°
69°
10
90°
66°
11
89°
67°
12
89°
68°
13
85°
64°
14
87°
65°
15
88°
67°
16
90°
64°
17
90°
67°
18
83°
62°
19
84°
63°
20
87°
65°
21
89°
67°
22
87°
67°
23
86°
66°
24
85°
64°
25
85°
66°
26
89°
67°
27
89°
68°
28
88°
67°
29
89°
66°
30
89°
67°
1
88°
66°
2
87°
66°
3
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yorba Linda
Yorba Linda's September 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 62° and 69°. The average high for September is 88° with an average low of 66°. 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 Yorba Linda. See also: October | November | December.
