S
M
T
W
T
F
S
26
64°
57°
27
65°
55°
28
62°
56°
29
62°
57°
30
66°
55°
31
64°
53°
1
61°
56°
2
61°
55°
3
64°
52°
4
62°
55°
5
61°
56°
6
65°
58°
7
62°
56°
8
61°
56°
9
62°
56°
10
63°
57°
11
65°
57°
12
65°
58°
13
61°
58°
14
68°
57°
15
66°
59°
16
61°
56°
17
63°
57°
18
60°
57°
19
61°
56°
20
62°
55°
21
61°
56°
22
65°
54°
23
62°
60°
24
64°
57°
25
65°
57°
26
71°
61°
27
68°
60°
28
68°
59°
29
65°
58°
30
64°
55°
31
65°
54°
1
67°
52°
2
67°
55°
3
69°
54°
4
71°
55°
5
70°
53°
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 71°, with overnight lows between 52° and 61°. The average high for August is 68° 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 Monterey. See also: September | October | November.