S
M
T
W
T
F
S
26
73°
42°
27
72°
55°
28
65°
49°
29
58°
39°
30
60°
36°
1
55°
37°
2
59°
32°
3
72°
45°
4
82°
43°
5
57°
47°
6
57°
35°
7
65°
29°
8
72°
42°
9
77°
50°
10
68°
41°
11
69°
42°
12
76°
45°
13
68°
44°
14
75°
38°
15
82°
57°
16
86°
62°
17
86°
65°
18
79°
66°
19
76°
52°
20
71°
47°
21
71°
47°
22
72°
53°
23
80°
56°
24
82°
56°
25
83°
58°
26
86°
60°
27
83°
59°
28
86°
57°
29
81°
58°
30
80°
57°
31
80°
54°
1
79°
56°
2
79°
57°
3
82°
58°
4
80°
60°
5
82°
59°
6
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Kewanee
Kewanee's May 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 54° and 60°. The average high for May is 82° with an average low of 58°. 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 Kewanee. See also: June | July | August.