S
M
T
W
T
F
S
26
75°
55°
27
69°
49°
28
63°
46°
29
64°
48°
30
61°
43°
1
56°
40°
2
61°
42°
3
65°
43°
4
64°
48°
5
68°
47°
6
63°
46°
7
62°
43°
8
62°
42°
9
63°
43°
10
63°
45°
11
67°
54°
12
72°
54°
13
72°
51°
14
65°
49°
15
64°
46°
16
64°
45°
17
65°
49°
18
65°
48°
19
66°
47°
20
65°
46°
21
67°
47°
22
69°
56°
23
73°
53°
24
73°
48°
25
67°
48°
26
68°
49°
27
68°
51°
28
69°
50°
29
70°
56°
30
70°
55°
31
71°
56°
1
71°
56°
2
75°
57°
3
78°
60°
4
80°
60°
5
83°
61°
6
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Channahon
Channahon's May 2026 forecast shows daily high temperatures ranging from 56° to 83°, with overnight lows between 40° and 62°. The average high for May is 68° with an average low of 50°. 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 Channahon. See also: June | July | August.