S
M
T
W
T
F
S
26
95°
74°
27
95°
73°
28
96°
73°
29
97°
75°
30
100°
75°
31
101°
74°
1
98°
75°
2
96°
73°
3
98°
74°
4
95°
73°
5
96°
74°
6
95°
72°
7
99°
71°
8
100°
72°
9
100°
73°
10
99°
74°
11
100°
73°
12
97°
73°
13
96°
72°
14
93°
72°
15
92°
71°
16
91°
67°
17
91°
66°
18
92°
66°
19
91°
67°
20
92°
66°
21
101°
70°
22
100°
70°
23
98°
69°
24
99°
71°
25
97°
66°
26
92°
67°
27
92°
65°
28
91°
65°
29
89°
66°
30
90°
67°
31
91°
69°
1
92°
68°
2
92°
63°
3
89°
61°
4
88°
62°
5
88°
63°
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 88° to 101°, with overnight lows between 61° and 75°. The average high for August is 95° with an average low of 70°. 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.
