S
M
T
W
T
F
S
30
100°
76°
31
100°
79°
1
100°
79°
2
101°
76°
3
101°
81°
4
94°
80°
5
97°
79°
6
99°
78°
7
99°
78°
8
100°
79°
9
99°
79°
10
98°
77°
11
100°
77°
12
99°
78°
13
98°
77°
14
99°
77°
15
100°
76°
16
96°
76°
17
100°
74°
18
96°
73°
19
93°
69°
20
95°
74°
21
93°
72°
22
94°
72°
23
89°
65°
24
82°
71°
25
90°
71°
26
90°
70°
27
85°
71°
28
85°
70°
29
89°
71°
30
89°
70°
1
88°
70°
2
87°
69°
3
86°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Leon Valley
Leon Valley's September 2026 forecast shows daily high temperatures ranging from 82° to 100°, with overnight lows between 65° and 78°. The average high for September is 93° with an average low of 72°. 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 Leon Valley. See also: October | November | December.
