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
100°
78°
11
97°
74°
12
95°
76°
13
97°
79°
14
95°
74°
15
92°
74°
16
92°
72°
17
98°
75°
18
102°
74°
19
97°
74°
20
99°
73°
21
96°
74°
22
97°
73°
23
93°
69°
24
90°
66°
25
87°
65°
26
93°
72°
27
93°
71°
28
88°
71°
29
86°
66°
30
89°
68°
1
93°
69°
2
93°
69°
3
92°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tucson
Tucson's September 2026 forecast shows daily high temperatures ranging from 86° to 102°, with overnight lows between 65° and 79°. The average high for September is 94° with an average low of 72°. 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 Tucson. See also: October | November | December.
