S
M
T
W
T
F
S
26
91°
73°
27
92°
72°
28
91°
72°
29
91°
74°
30
92°
74°
31
91°
73°
1
92°
73°
2
94°
74°
3
93°
73°
4
92°
73°
5
93°
77°
6
94°
73°
7
92°
71°
8
90°
71°
9
90°
72°
10
91°
72°
11
91°
73°
12
90°
72°
13
91°
72°
14
93°
75°
15
94°
75°
16
94°
74°
17
93°
75°
18
93°
74°
19
92°
73°
20
89°
75°
21
93°
74°
22
90°
74°
23
92°
73°
24
93°
74°
25
93°
74°
26
92°
73°
27
93°
74°
28
93°
73°
29
92°
73°
30
93°
72°
31
92°
73°
1
91°
71°
2
91°
69°
3
90°
71°
4
91°
74°
5
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Martinez
Martinez's August 2026 forecast shows daily high temperatures ranging from 89° to 94°, with overnight lows between 69° and 77°. The average high for August is 92° with an average low of 73°. 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 Martinez. See also: September | October | November.