S
M
T
W
T
F
S
30
98°
72°
31
96°
73°
1
97°
74°
2
99°
73°
3
97°
74°
4
96°
72°
5
96°
73°
6
96°
73°
7
95°
72°
8
95°
72°
9
91°
66°
10
93°
70°
11
85°
68°
12
85°
64°
13
86°
65°
14
85°
69°
15
83°
68°
16
83°
68°
17
84°
66°
18
83°
68°
19
85°
68°
20
84°
67°
21
83°
67°
22
85°
66°
23
85°
65°
24
86°
66°
25
86°
65°
26
87°
64°
27
86°
64°
28
86°
63°
29
87°
64°
30
87°
64°
1
86°
63°
2
87°
63°
3
88°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sonora
Sonora's September 2026 forecast shows daily high temperatures ranging from 83° to 99°, with overnight lows between 62° and 74°. The average high for September is 89° with an average low of 68°. 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 Sonora. See also: October | November | December.