S
M
T
W
T
F
S
26
103°
80°
27
106°
82°
28
107°
83°
29
105°
80°
30
103°
79°
31
105°
81°
1
104°
80°
2
102°
78°
3
101°
81°
4
101°
80°
5
102°
80°
6
104°
81°
7
103°
81°
8
102°
82°
9
104°
81°
10
104°
80°
11
97°
78°
12
98°
78°
13
99°
76°
14
99°
73°
15
97°
73°
16
96°
76°
17
97°
76°
18
100°
78°
19
99°
77°
20
97°
79°
21
99°
75°
22
96°
74°
23
96°
75°
24
97°
77°
25
96°
72°
26
94°
70°
27
93°
70°
28
93°
73°
29
94°
72°
30
94°
75°
31
95°
73°
1
96°
72°
2
94°
73°
3
96°
72°
4
94°
69°
5
93°
68°
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 107°, with overnight lows between 68° and 83°. The average high for August is 99° with an average low of 77°. 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.
