S
M
T
W
T
F
S
26
103°
83°
27
105°
79°
28
105°
77°
29
100°
74°
30
100°
69°
31
107°
72°
1
106°
72°
2
107°
73°
3
106°
80°
4
107°
76°
5
104°
73°
6
105°
72°
7
104°
69°
8
104°
70°
9
102°
73°
10
101°
73°
11
101°
73°
12
94°
71°
13
88°
70°
14
87°
69°
15
90°
61°
16
97°
64°
17
100°
65°
18
101°
70°
19
106°
73°
20
103°
75°
21
101°
76°
22
100°
78°
23
99°
72°
24
95°
70°
25
96°
64°
26
100°
70°
27
100°
71°
28
100°
73°
29
92°
70°
30
90°
68°
31
79°
64°
1
88°
58°
2
89°
64°
3
91°
66°
4
90°
69°
5
92°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lake Powell
Lake Powell's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Lake Powell. See also: September | October | November.