S
M
T
W
T
F
S
26
63°
51°
27
66°
43°
28
74°
44°
29
75°
46°
30
78°
49°
1
74°
51°
2
59°
52°
3
69°
53°
4
67°
55°
5
68°
54°
6
75°
53°
7
76°
53°
8
81°
55°
9
85°
56°
10
87°
57°
11
88°
58°
12
91°
57°
13
92°
57°
14
85°
55°
15
81°
56°
16
78°
53°
17
82°
58°
18
81°
57°
19
82°
57°
20
83°
56°
21
81°
56°
22
81°
55°
23
82°
58°
24
83°
58°
25
83°
57°
26
82°
56°
27
77°
56°
28
76°
55°
29
77°
57°
30
77°
57°
31
78°
58°
1
81°
59°
2
83°
58°
3
82°
58°
4
77°
57°
5
79°
56°
6
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Contra Costa Centre
Contra Costa Centre's May 2026 forecast shows daily high temperatures ranging from 67° to 92°, with overnight lows between 53° and 59°. The average high for May is 80° with an average low of 56°. 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 Contra Costa Centre. See also: June | July | August.