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
108°
88°
10
104°
85°
11
100°
81°
12
97°
77°
13
93°
75°
14
94°
75°
15
95°
77°
16
98°
78°
17
101°
79°
18
101°
77°
19
97°
78°
20
99°
76°
21
100°
75°
22
99°
73°
23
101°
75°
24
95°
71°
25
96°
71°
26
92°
70°
27
93°
73°
28
96°
77°
29
97°
73°
30
98°
73°
31
100°
71°
1
98°
72°
2
98°
72°
3
96°
69°
4
97°
71°
5
96°
71°
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 92° to 108°, with overnight lows between 69° and 88°. The average high for August is 98° with an average low of 75°. 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.
