S
M
T
W
T
F
S
26
97°
74°
27
97°
75°
28
98°
75°
29
97°
73°
30
97°
73°
31
98°
74°
1
97°
75°
2
100°
74°
3
104°
81°
4
106°
81°
5
107°
78°
6
104°
81°
7
105°
80°
8
104°
78°
9
105°
75°
10
102°
75°
11
102°
76°
12
104°
79°
13
103°
76°
14
101°
76°
15
100°
77°
16
98°
73°
17
98°
73°
18
96°
72°
19
96°
71°
20
95°
71°
21
95°
72°
22
94°
71°
23
95°
71°
24
95°
72°
25
97°
77°
26
100°
74°
27
99°
72°
28
101°
74°
29
101°
75°
30
100°
76°
31
96°
74°
1
93°
76°
2
92°
75°
3
96°
76°
4
97°
76°
5
97°
72°
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 107°, with overnight lows between 71° and 81°. The average high for August is 99° 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.
