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
98°
78°
9
96°
75°
10
97°
77°
11
98°
76°
12
99°
78°
13
101°
77°
14
99°
77°
15
98°
76°
16
94°
73°
17
94°
72°
18
93°
71°
19
94°
72°
20
90°
70°
21
89°
67°
22
92°
72°
23
89°
71°
24
82°
71°
25
82°
70°
26
84°
70°
27
85°
69°
28
85°
71°
29
86°
71°
30
87°
65°
1
81°
61°
2
80°
60°
3
80°
60°
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 80° to 101°, with overnight lows between 60° and 78°. The average high for September is 91° with an average low of 71°. 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.
