S
M
T
W
T
F
S
26
89°
55°
27
90°
55°
28
91°
54°
29
90°
54°
30
89°
52°
31
89°
51°
1
88°
51°
2
88°
52°
3
89°
51°
4
91°
54°
5
90°
55°
6
91°
55°
7
91°
54°
8
90°
56°
9
92°
55°
10
92°
55°
11
91°
51°
12
91°
52°
13
90°
49°
14
86°
49°
15
86°
52°
16
88°
52°
17
91°
53°
18
92°
52°
19
92°
51°
20
91°
53°
21
92°
52°
22
92°
53°
23
91°
51°
24
87°
49°
25
88°
48°
26
86°
48°
27
86°
47°
28
87°
46°
29
87°
47°
30
90°
49°
31
92°
50°
1
92°
50°
2
93°
51°
3
92°
50°
4
92°
53°
5
91°
52°
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 86° to 93°, with overnight lows between 46° and 56°. The average high for August is 90° with an average low of 52°. 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.