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
60°
38°
7
63°
46°
8
65°
46°
9
76°
54°
10
64°
39°
11
63°
43°
12
66°
49°
13
71°
52°
14
74°
54°
15
77°
51°
16
69°
53°
17
69°
52°
18
71°
51°
19
86°
65°
20
69°
50°
21
68°
51°
22
68°
50°
23
70°
52°
24
71°
53°
25
71°
54°
26
72°
52°
27
73°
53°
28
73°
54°
29
75°
57°
30
79°
58°
31
80°
61°
1
80°
61°
2
77°
58°
3
82°
63°
4
83°
64°
5
83°
64°
6
80°
65°
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 60° to 86°, with overnight lows between 38° and 65°. The average high for May is 73° with an average low of 54°. 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.
