S
M
T
W
T
F
S
30
102°
80°
31
85°
68°
1
95°
71°
2
96°
76°
3
96°
79°
4
98°
77°
5
99°
76°
6
100°
78°
7
99°
79°
8
100°
78°
9
101°
80°
10
102°
77°
11
100°
80°
12
96°
77°
13
101°
74°
14
101°
73°
15
94°
73°
16
87°
70°
17
92°
70°
18
97°
70°
19
97°
71°
20
95°
70°
21
94°
71°
22
94°
69°
23
93°
70°
24
95°
73°
25
94°
73°
26
98°
72°
27
96°
71°
28
95°
69°
29
98°
64°
30
86°
66°
1
90°
68°
2
94°
70°
3
92°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Tucson
South Tucson's September 2026 forecast shows daily high temperatures ranging from 86° to 98°, with overnight lows between 64° and 73°. The average high for September is 94° with an average low of 70°. 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 South Tucson. See also: October | November | December.
