S
M
T
W
T
F
S
27
85°
58°
28
84°
58°
29
87°
60°
30
88°
64°
1
89°
66°
2
90°
69°
3
85°
73°
4
77°
68°
5
76°
66°
6
80°
62°
7
82°
60°
8
81°
60°
9
76°
64°
10
77°
65°
11
76°
64°
12
85°
63°
13
87°
61°
14
90°
63°
15
89°
65°
16
86°
68°
17
74°
54°
18
66°
46°
19
69°
43°
20
75°
46°
21
75°
48°
22
78°
47°
23
74°
49°
24
73°
50°
25
72°
50°
26
74°
46°
27
77°
50°
28
76°
55°
29
77°
54°
30
76°
57°
31
68°
56°
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 68° to 78°, with overnight lows between 46° and 57°. The average high for October is 75° with an average low of 51°. 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.