S
M
T
W
T
F
S
27
76°
53°
28
80°
49°
29
92°
52°
30
81°
57°
1
87°
54°
2
90°
57°
3
89°
59°
4
96°
64°
5
90°
63°
6
98°
60°
7
96°
58°
8
92°
59°
9
81°
59°
10
74°
54°
11
73°
46°
12
77°
46°
13
81°
48°
14
80°
47°
15
80°
49°
16
85°
47°
17
85°
49°
18
86°
48°
19
75°
45°
20
77°
48°
21
77°
48°
22
76°
49°
23
77°
48°
24
77°
48°
25
76°
49°
26
77°
48°
27
69°
47°
28
67°
42°
29
66°
43°
30
66°
42°
31
66°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Martinez
Martinez's October 2026 forecast shows daily high temperatures ranging from 66° to 98°, with overnight lows between 42° and 60°. The average high for October is 78° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Martinez. See also: November | December | January.