S
M
T
W
T
F
S
26
59°
43°
27
69°
43°
28
64°
46°
29
61°
49°
30
63°
49°
1
66°
46°
2
64°
50°
3
63°
46°
4
74°
46°
5
86°
57°
6
73°
56°
7
67°
50°
8
65°
48°
9
69°
52°
10
77°
50°
11
63°
52°
12
68°
46°
13
76°
50°
14
68°
52°
15
66°
54°
16
78°
63°
17
86°
66°
18
75°
67°
19
93°
72°
20
91°
57°
21
70°
54°
22
64°
53°
23
71°
57°
24
75°
59°
25
74°
62°
26
78°
65°
27
81°
63°
28
80°
57°
29
70°
56°
30
71°
61°
31
78°
59°
1
72°
57°
2
72°
56°
3
73°
56°
4
72°
55°
5
74°
62°
6
78°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Willowbrook
Willowbrook's May 2026 forecast shows daily high temperatures ranging from 64° to 93°, with overnight lows between 53° and 72°. The average high for May is 76° with an average low of 60°. 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 Willowbrook. See also: June | July | August.
