S
M
T
W
T
F
S
26
52°
37°
27
45°
39°
28
50°
34°
29
55°
28°
30
52°
28°
1
54°
30°
2
70°
36°
3
72°
45°
4
63°
37°
5
48°
32°
6
45°
28°
7
63°
32°
8
70°
36°
9
59°
41°
10
57°
37°
11
72°
28°
12
72°
48°
13
75°
45°
14
81°
54°
15
81°
54°
16
72°
46°
17
73°
45°
18
52°
43°
19
52°
39°
20
64°
34°
21
70°
43°
22
54°
46°
23
66°
54°
24
84°
52°
25
93°
57°
26
93°
57°
27
93°
70°
28
93°
61°
29
88°
63°
30
81°
64°
31
68°
57°
1
75°
63°
2
88°
63°
3
84°
66°
4
81°
63°
5
82°
63°
6
88°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wheaton
Wheaton's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Wheaton. See also: June | July | August.
