S
M
T
W
T
F
S
26
62°
42°
27
73°
39°
28
62°
40°
29
67°
48°
30
65°
48°
1
66°
40°
2
62°
47°
3
62°
42°
4
74°
44°
5
83°
53°
6
68°
54°
7
66°
47°
8
66°
40°
9
64°
48°
10
76°
49°
11
62°
47°
12
67°
38°
13
73°
52°
14
65°
51°
15
66°
49°
16
82°
45°
17
87°
61°
18
94°
65°
19
96°
71°
20
94°
57°
21
67°
50°
22
63°
49°
23
56°
51°
24
67°
54°
25
75°
55°
26
77°
57°
27
78°
54°
28
79°
55°
29
77°
54°
30
80°
55°
31
84°
60°
1
86°
53°
2
77°
55°
3
73°
56°
4
75°
57°
5
79°
54°
6
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Stockton
Stockton's May 2026 forecast shows daily high temperatures ranging from 56° to 96°, with overnight lows between 49° and 71°. The average high for May is 77° with an average low of 55°. 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 Stockton. See also: June | July | August.