S
M
T
W
T
F
S
26
76°
55°
27
74°
53°
28
74°
54°
29
66°
55°
30
66°
52°
31
71°
53°
1
68°
54°
2
66°
53°
3
64°
49°
4
64°
49°
5
65°
55°
6
69°
56°
7
73°
57°
8
69°
55°
9
69°
59°
10
70°
59°
11
67°
59°
12
69°
62°
13
69°
60°
14
71°
58°
15
69°
57°
16
69°
58°
17
72°
58°
18
73°
57°
19
72°
56°
20
73°
57°
21
74°
56°
22
74°
55°
23
71°
56°
24
69°
55°
25
73°
55°
26
74°
54°
27
74°
55°
28
73°
55°
29
72°
54°
30
74°
58°
31
74°
58°
1
71°
57°
2
71°
57°
3
73°
58°
4
74°
58°
5
74°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grover Beach
Grover Beach's August 2026 forecast shows daily high temperatures ranging from 69° to 74°, with overnight lows between 54° and 58°. The average high for August is 73° with an average low of 56°. 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 Grover Beach. See also: September | October | November.
