S
M
T
W
T
F
S
30
102°
80°
31
85°
68°
1
94°
72°
2
95°
74°
3
94°
75°
4
95°
74°
5
95°
73°
6
96°
69°
7
97°
67°
8
96°
68°
9
89°
67°
10
91°
67°
11
92°
68°
12
95°
65°
13
94°
67°
14
97°
64°
15
97°
67°
16
98°
67°
17
98°
66°
18
97°
67°
19
98°
65°
20
97°
64°
21
97°
64°
22
96°
65°
23
97°
65°
24
97°
64°
25
96°
64°
26
92°
61°
27
88°
58°
28
91°
60°
29
92°
58°
30
89°
58°
1
89°
59°
2
90°
60°
3
89°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oro Valley
Oro Valley's September 2026 forecast shows daily high temperatures ranging from 88° to 98°, with overnight lows between 58° and 75°. The average high for September is 94° 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 Oro Valley. See also: October | November | December.
