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
73°
49°
18
80°
53°
19
86°
55°
20
89°
57°
21
90°
58°
22
89°
56°
23
86°
54°
24
85°
53°
25
84°
52°
26
80°
52°
27
81°
51°
28
82°
52°
29
83°
54°
30
81°
49°
31
81°
51°
1
85°
53°
2
85°
54°
3
86°
54°
4
87°
55°
5
87°
54°
6
86°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Copperopolis
Copperopolis's May 2026 forecast shows daily high temperatures ranging from 73° to 90°, with overnight lows between 49° and 58°. The average high for May is 84° with an average low of 53°. 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 Copperopolis. See also: June | July | August.