S
M
T
W
T
F
S
26
90°
58°
27
89°
57°
28
87°
56°
29
88°
57°
30
89°
57°
31
89°
58°
1
87°
57°
2
88°
58°
3
86°
57°
4
85°
56°
5
84°
56°
6
83°
55°
7
84°
56°
8
86°
56°
9
86°
55°
10
85°
54°
11
82°
53°
12
82°
53°
13
83°
54°
14
82°
54°
15
83°
55°
16
84°
56°
17
86°
53°
18
85°
52°
19
86°
52°
20
85°
53°
21
85°
53°
22
86°
57°
23
84°
57°
24
85°
54°
25
84°
55°
26
84°
53°
27
85°
53°
28
84°
54°
29
84°
51°
30
85°
51°
31
88°
52°
1
88°
54°
2
84°
51°
3
83°
50°
4
83°
51°
5
84°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San Martin
San Martin's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 50° and 58°. The average high for August is 85° with an average low of 54°. 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 San Martin. See also: September | October | November.