S
M
T
W
T
F
S
26
74°
55°
27
69°
54°
28
68°
56°
29
67°
54°
30
66°
52°
31
68°
52°
1
67°
53°
2
72°
54°
3
68°
54°
4
66°
53°
5
67°
53°
6
66°
54°
7
69°
54°
8
72°
54°
9
71°
56°
10
72°
57°
11
71°
56°
12
72°
58°
13
70°
58°
14
69°
57°
15
72°
58°
16
73°
57°
17
73°
58°
18
72°
58°
19
73°
57°
20
73°
58°
21
72°
58°
22
73°
57°
23
71°
56°
24
71°
55°
25
73°
56°
26
74°
57°
27
73°
56°
28
76°
58°
29
75°
57°
30
76°
57°
31
75°
56°
1
75°
57°
2
74°
59°
3
76°
58°
4
76°
56°
5
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marin City
Marin City's August 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 52° and 59°. The average high for August is 72° 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 Marin City. See also: September | October | November.