S
M
T
W
T
F
S
30
92°
70°
31
87°
64°
1
84°
62°
2
83°
57°
3
82°
55°
4
82°
58°
5
89°
59°
6
74°
67°
7
83°
70°
8
92°
70°
9
99°
79°
10
97°
77°
11
92°
72°
12
90°
68°
13
86°
64°
14
89°
61°
15
82°
58°
16
78°
56°
17
77°
56°
18
77°
52°
19
81°
54°
20
81°
58°
21
74°
55°
22
79°
56°
23
90°
65°
24
89°
67°
25
85°
64°
26
89°
67°
27
84°
67°
28
77°
57°
29
82°
56°
30
83°
60°
1
92°
66°
2
94°
73°
3
91°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yucaipa
Yucaipa's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Yucaipa. See also: October | November | December.
