S
M
T
W
T
F
S
26
75°
45°
27
64°
57°
28
61°
51°
29
60°
42°
30
61°
37°
1
56°
40°
2
56°
38°
3
66°
42°
4
77°
49°
5
57°
48°
6
59°
39°
7
61°
46°
8
63°
46°
9
74°
53°
10
60°
41°
11
64°
43°
12
64°
49°
13
72°
52°
14
74°
54°
15
77°
51°
16
70°
52°
17
71°
51°
18
74°
52°
19
78°
52°
20
71°
48°
21
69°
48°
22
69°
49°
23
71°
51°
24
72°
52°
25
73°
53°
26
73°
51°
27
75°
52°
28
75°
52°
29
76°
56°
30
80°
57°
31
82°
60°
1
81°
60°
2
79°
57°
3
83°
62°
4
84°
63°
5
84°
64°
6
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rantoul
Rantoul's May 2026 forecast shows daily high temperatures ranging from 59° to 84°, with overnight lows between 39° and 64°. The average high for May is 73° with an average low of 52°. 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 Rantoul. See also: June | July | August.
