S
M
T
W
T
F
S
26
77°
46°
27
63°
57°
28
62°
51°
29
62°
43°
30
62°
37°
1
56°
43°
2
57°
39°
3
66°
39°
4
75°
50°
5
55°
48°
6
59°
43°
7
63°
39°
8
64°
48°
9
75°
50°
10
68°
52°
11
70°
46°
12
84°
45°
13
70°
44°
14
70°
39°
15
74°
50°
16
75°
61°
17
85°
61°
18
77°
61°
19
78°
58°
20
70°
50°
21
68°
48°
22
72°
54°
23
78°
58°
24
77°
58°
25
83°
54°
26
80°
58°
27
84°
64°
28
87°
61°
29
87°
56°
30
84°
54°
31
78°
58°
1
82°
55°
2
81°
52°
3
80°
55°
4
81°
60°
5
82°
64°
6
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Champaign
Champaign's May 2026 forecast shows daily high temperatures ranging from 78° to 84°, with overnight lows between 52° and 64°. The average high for May is 81° with an average low of 57°. 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 Champaign. See also: June | July | August.
