S
M
T
W
T
F
S
26
52°
45°
27
61°
41°
28
68°
41°
29
73°
41°
30
75°
46°
1
77°
48°
2
77°
54°
3
66°
50°
4
52°
48°
5
55°
48°
6
72°
43°
7
81°
50°
8
81°
46°
9
82°
50°
10
86°
55°
11
90°
55°
12
88°
57°
13
75°
48°
14
81°
48°
15
81°
50°
16
73°
50°
17
70°
45°
18
77°
46°
19
81°
48°
20
82°
48°
21
86°
54°
22
86°
52°
23
84°
51°
24
81°
49°
25
77°
46°
26
69°
47°
27
71°
47°
28
73°
51°
29
79°
51°
30
82°
49°
31
80°
50°
1
91°
58°
2
92°
56°
3
91°
56°
4
87°
57°
5
89°
55°
6
84°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Martinez
Martinez's May 2026 forecast shows daily high temperatures ranging from 69° to 92°, with overnight lows between 46° and 58°. The average high for May is 82° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Martinez. See also: June | July | August.
