S
M
T
W
T
F
S
26
57°
40°
27
66°
46°
28
65°
52°
29
55°
38°
30
53°
40°
1
44°
41°
2
49°
45°
3
62°
50°
4
69°
49°
5
54°
42°
6
52°
39°
7
50°
40°
8
57°
43°
9
59°
46°
10
59°
44°
11
59°
46°
12
63°
49°
13
65°
46°
14
62°
49°
15
59°
45°
16
59°
44°
17
60°
53°
18
68°
53°
19
62°
52°
20
66°
54°
21
68°
54°
22
65°
53°
23
69°
50°
24
62°
48°
25
62°
50°
26
64°
56°
27
68°
54°
28
64°
52°
29
64°
49°
30
66°
48°
31
65°
48°
1
65°
54°
2
74°
53°
3
65°
52°
4
66°
49°
5
66°
50°
6
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wilmette
Wilmette's May 2026 forecast shows daily high temperatures ranging from 44° to 74°, with overnight lows between 39° and 56°. The average high for May is 62° with an average low of 48°. 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 Wilmette. See also: June | July | August.
