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°
73°
17
106°
81°
18
109°
81°
19
109°
81°
20
106°
84°
21
108°
86°
22
109°
82°
23
105°
86°
24
104°
81°
25
105°
82°
26
108°
83°
27
108°
84°
28
107°
83°
29
106°
81°
30
105°
79°
31
103°
78°
1
103°
76°
2
100°
76°
3
93°
74°
4
96°
75°
5
97°
73°
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 93° to 108°, with overnight lows between 73° and 86°. The average high for August is 103° with an average low of 79°. 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.
