S
M
T
W
T
F
S
30
99°
67°
31
98°
66°
1
98°
66°
2
97°
65°
3
98°
68°
4
95°
65°
5
97°
62°
6
97°
56°
7
90°
56°
8
89°
58°
9
90°
60°
10
93°
63°
11
95°
60°
12
96°
59°
13
93°
63°
14
95°
62°
15
94°
58°
16
91°
57°
17
93°
60°
18
94°
61°
19
93°
59°
20
93°
55°
21
90°
59°
22
85°
59°
23
83°
56°
24
85°
59°
25
85°
56°
26
88°
53°
27
84°
53°
28
84°
56°
29
83°
51°
30
82°
55°
1
82°
60°
2
89°
58°
3
82°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Leona Valley
Leona Valley's September 2026 forecast shows daily high temperatures ranging from 82° to 99°, with overnight lows between 51° and 68°. The average high for September is 91° with an average low of 59°. 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 Leona Valley. See also: October | November | December.
