S
M
T
W
T
F
S
26
85°
52°
27
85°
49°
28
82°
54°
29
82°
53°
30
94°
51°
31
94°
49°
1
83°
52°
2
91°
52°
3
86°
53°
4
85°
55°
5
79°
57°
6
85°
56°
7
87°
58°
8
87°
58°
9
90°
57°
10
81°
53°
11
87°
52°
12
88°
54°
13
86°
53°
14
87°
54°
15
89°
53°
16
86°
52°
17
88°
53°
18
90°
51°
19
89°
50°
20
85°
50°
21
88°
52°
22
88°
51°
23
86°
54°
24
90°
53°
25
90°
53°
26
89°
54°
27
90°
54°
28
90°
53°
29
89°
54°
30
88°
53°
31
90°
53°
1
88°
51°
2
87°
52°
3
90°
51°
4
86°
53°
5
85°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Boulder Creek
Boulder Creek's August 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 50° and 58°. The average high for August is 88° with an average low of 53°. 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 Creek. See also: September | October | November.