S
M
T
W
T
F
S
26
94°
75°
27
101°
80°
28
100°
76°
29
96°
75°
30
93°
74°
31
93°
74°
1
94°
75°
2
94°
74°
3
95°
78°
4
100°
79°
5
101°
80°
6
101°
78°
7
96°
76°
8
94°
78°
9
96°
76°
10
97°
74°
11
98°
73°
12
96°
74°
13
94°
74°
14
97°
76°
15
99°
76°
16
98°
78°
17
100°
77°
18
100°
79°
19
99°
79°
20
100°
78°
21
97°
77°
22
94°
76°
23
94°
77°
24
101°
80°
25
102°
79°
26
102°
78°
27
103°
75°
28
98°
74°
29
97°
71°
30
93°
72°
31
95°
73°
1
95°
72°
2
94°
71°
3
94°
74°
4
97°
75°
5
100°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Tucson
Tucson's August 2026 forecast shows daily high temperatures ranging from 93° to 103°, with overnight lows between 71° and 80°. The average high for August is 97° with an average low of 76°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Tucson. See also: September | October | November.