S
M
T
W
T
F
S
26
85°
66°
27
86°
67°
28
86°
67°
29
87°
68°
30
87°
70°
31
91°
71°
1
91°
72°
2
90°
72°
3
90°
71°
4
89°
71°
5
90°
66°
6
86°
65°
7
85°
66°
8
85°
66°
9
86°
67°
10
86°
67°
11
90°
69°
12
89°
67°
13
90°
68°
14
91°
70°
15
90°
70°
16
86°
68°
17
87°
69°
18
87°
68°
19
84°
64°
20
85°
69°
21
86°
70°
22
87°
68°
23
88°
65°
24
89°
68°
25
90°
69°
26
91°
69°
27
91°
68°
28
90°
69°
29
89°
68°
30
88°
68°
31
87°
66°
1
86°
65°
2
88°
66°
3
87°
64°
4
88°
66°
5
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Utah
Utah's August 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 64° and 72°. The average high for August is 88° with an average low of 68°. 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 Utah. See also: September | October | November.