S
M
T
W
T
F
S
30
88°
55°
31
82°
55°
1
73°
50°
2
77°
48°
3
77°
50°
4
73°
59°
5
81°
54°
6
81°
52°
7
84°
54°
8
93°
55°
9
99°
63°
10
99°
64°
11
93°
59°
12
88°
57°
13
77°
50°
14
82°
48°
15
84°
52°
16
78°
49°
17
78°
51°
18
85°
57°
19
88°
60°
20
83°
59°
21
84°
53°
22
89°
55°
23
96°
58°
24
92°
57°
25
92°
54°
26
81°
53°
27
81°
52°
28
84°
52°
29
83°
47°
30
79°
49°
1
84°
51°
2
81°
51°
3
84°
51°
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 78° to 96°, with overnight lows between 47° and 60°. The average high for September is 85° with an average low of 53°. 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.