S
M
T
W
T
F
S
26
111°
88°
27
111°
88°
28
108°
82°
29
108°
86°
30
109°
79°
31
111°
79°
1
115°
82°
2
115°
84°
3
113°
82°
4
111°
84°
5
108°
84°
6
108°
86°
7
109°
88°
8
111°
86°
9
111°
86°
10
106°
84°
11
99°
81°
12
97°
77°
13
90°
73°
14
95°
66°
15
93°
66°
16
100°
80°
17
103°
80°
18
104°
82°
19
105°
83°
20
105°
82°
21
104°
80°
22
101°
79°
23
99°
79°
24
102°
78°
25
101°
77°
26
101°
78°
27
102°
76°
28
100°
77°
29
97°
73°
30
89°
70°
31
90°
69°
1
90°
68°
2
91°
68°
3
90°
69°
4
90°
69°
5
92°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Boulder City
Boulder City's August 2026 forecast shows daily high temperatures ranging from 89° to 105°, with overnight lows between 68° and 83°. The average high for August is 98° 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 Boulder City. See also: September | October | November.
