S
M
T
W
T
F
S
26
111°
88°
27
111°
88°
28
108°
82°
29
108°
86°
30
108°
82°
31
111°
85°
1
113°
87°
2
113°
86°
3
110°
83°
4
110°
84°
5
107°
83°
6
105°
82°
7
102°
81°
8
105°
82°
9
101°
78°
10
99°
80°
11
102°
80°
12
100°
77°
13
102°
79°
14
95°
74°
15
92°
72°
16
93°
72°
17
93°
71°
18
94°
71°
19
92°
70°
20
93°
71°
21
93°
71°
22
92°
72°
23
92°
70°
24
91°
70°
25
92°
71°
26
92°
71°
27
93°
70°
28
95°
70°
29
96°
71°
30
96°
73°
31
98°
71°
1
99°
71°
2
99°
75°
3
97°
72°
4
91°
69°
5
91°
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 91° to 113°, with overnight lows between 69° and 87°. 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.
