S
M
T
W
T
F
S
26
106°
88°
27
112°
88°
28
108°
89°
29
111°
88°
30
112°
85°
31
112°
87°
1
116°
86°
2
114°
89°
3
113°
88°
4
108°
89°
5
105°
87°
6
106°
86°
7
111°
87°
8
112°
88°
9
111°
88°
10
108°
89°
11
105°
89°
12
105°
85°
13
103°
86°
14
103°
86°
15
107°
83°
16
110°
87°
17
113°
85°
18
113°
87°
19
110°
88°
20
103°
85°
21
113°
84°
22
116°
86°
23
110°
88°
24
109°
87°
25
114°
89°
26
113°
86°
27
112°
86°
28
113°
86°
29
108°
84°
30
105°
81°
31
103°
78°
1
101°
79°
2
103°
81°
3
105°
80°
4
103°
79°
5
102°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Martinez Lake
Martinez Lake's August 2026 forecast shows daily high temperatures ranging from 101° to 113°, with overnight lows between 78° and 86°. The average high for August is 106° with an average low of 82°. 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 Lake. See also: September | October | November.