S
M
T
W
T
F
S
30
94°
76°
31
99°
78°
1
100°
79°
2
100°
76°
3
93°
74°
4
92°
72°
5
92°
73°
6
93°
74°
7
92°
74°
8
92°
73°
9
93°
73°
10
91°
72°
11
91°
71°
12
92°
70°
13
91°
74°
14
91°
69°
15
90°
69°
16
91°
71°
17
93°
73°
18
96°
72°
19
95°
71°
20
94°
71°
21
94°
72°
22
93°
71°
23
92°
70°
24
92°
71°
25
90°
69°
26
89°
69°
27
93°
67°
28
91°
67°
29
88°
68°
30
87°
64°
1
86°
63°
2
85°
63°
3
86°
62°
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 85° to 100°, with overnight lows between 62° and 79°. The average high for September is 92° 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 South Tucson. See also: October | November | December.
