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
66°
55°
3
66°
57°
4
64°
57°
5
67°
56°
6
66°
58°
7
71°
54°
8
72°
54°
9
69°
55°
10
64°
54°
11
66°
54°
12
68°
54°
13
67°
53°
14
68°
56°
15
69°
55°
16
65°
55°
17
66°
54°
18
67°
54°
19
66°
53°
20
66°
53°
21
69°
55°
22
68°
54°
23
67°
56°
24
71°
56°
25
71°
55°
26
70°
57°
27
71°
57°
28
71°
56°
29
70°
57°
30
69°
56°
31
71°
56°
1
69°
55°
2
69°
56°
3
72°
55°
4
68°
56°
5
68°
56°
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 72°, with overnight lows between 53° and 58°. The average high for August is 68° 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.