S
M
T
W
T
F
S
26
68°
56°
27
69°
56°
28
69°
55°
29
70°
57°
30
71°
57°
31
70°
56°
1
65°
54°
2
64°
54°
3
69°
55°
4
65°
54°
5
64°
54°
6
68°
55°
7
69°
55°
8
64°
56°
9
68°
55°
10
69°
56°
11
71°
56°
12
70°
55°
13
70°
53°
14
69°
54°
15
71°
55°
16
71°
56°
17
70°
57°
18
72°
57°
19
72°
56°
20
71°
56°
21
70°
53°
22
68°
51°
23
66°
52°
24
66°
54°
25
67°
51°
26
72°
55°
27
72°
56°
28
71°
56°
29
72°
53°
30
71°
54°
31
72°
53°
1
71°
52°
2
71°
52°
3
70°
54°
4
72°
56°
5
73°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Monterey
Monterey's August 2026 forecast shows daily high temperatures ranging from 64° to 73°, with overnight lows between 51° and 57°. The average high for August is 69° with an average low of 55°. 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 Monterey. See also: September | October | November.