S
M
T
W
T
F
S
26
108°
89°
27
107°
87°
28
107°
85°
29
107°
85°
30
108°
86°
31
111°
87°
1
113°
87°
2
113°
84°
3
110°
83°
4
108°
84°
5
105°
82°
6
105°
80°
7
102°
81°
8
101°
77°
9
103°
80°
10
102°
80°
11
103°
80°
12
103°
79°
13
102°
79°
14
101°
78°
15
101°
77°
16
100°
78°
17
102°
79°
18
99°
78°
19
97°
79°
20
100°
78°
21
98°
74°
22
98°
73°
23
95°
72°
24
94°
71°
25
93°
72°
26
94°
70°
27
96°
72°
28
93°
70°
29
91°
69°
30
91°
69°
31
92°
70°
1
92°
69°
2
91°
68°
3
91°
67°
4
90°
67°
5
89°
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 89° to 113°, with overnight lows between 67° and 89°. The average high for August is 100° 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.
