S
M
T
W
T
F
S
26
62°
40°
27
58°
44°
28
62°
46°
29
47°
33°
30
47°
31°
1
45°
28°
2
61°
26°
3
71°
45°
4
76°
39°
5
54°
32°
6
52°
29°
7
55°
31°
8
64°
42°
9
61°
34°
10
55°
32°
11
59°
35°
12
50°
39°
13
59°
42°
14
65°
45°
15
66°
43°
16
67°
47°
17
70°
50°
18
67°
47°
19
68°
48°
20
81°
58°
21
64°
42°
22
62°
42°
23
64°
44°
24
64°
45°
25
66°
49°
26
70°
48°
27
74°
51°
28
75°
53°
29
75°
54°
30
76°
55°
31
76°
55°
1
73°
52°
2
74°
56°
3
77°
57°
4
78°
56°
5
76°
54°
6
67°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Matteson
Matteson's May 2026 forecast shows daily high temperatures ranging from 50° to 81°, with overnight lows between 31° and 58°. The average high for May is 68° with an average low of 47°. 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 Matteson. See also: June | July | August.