S
M
T
W
T
F
S
26
44°
30°
27
37°
27°
28
47°
23°
29
47°
26°
30
49°
28°
1
56°
29°
2
64°
32°
3
66°
38°
4
64°
38°
5
50°
28°
6
50°
35°
7
63°
42°
8
64°
42°
9
57°
37°
10
63°
42°
11
68°
47°
12
71°
46°
13
68°
43°
14
73°
48°
15
72°
47°
16
67°
43°
17
74°
48°
18
66°
37°
19
55°
32°
20
59°
34°
21
65°
37°
22
67°
44°
23
68°
43°
24
58°
40°
25
65°
41°
26
68°
44°
27
68°
42°
28
59°
41°
29
57°
39°
30
59°
38°
31
62°
39°
1
63°
40°
2
66°
41°
3
68°
43°
4
68°
45°
5
70°
42°
6
71°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Evanston
Evanston's May 2026 forecast shows daily high temperatures ranging from 50° to 74°, with overnight lows between 28° and 48°. The average high for May is 64° with an average low of 41°. 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 Evanston. See also: June | July | August.
