S
M
T
W
T
F
S
26
78°
52°
27
72°
59°
28
73°
61°
29
68°
52°
30
63°
42°
1
61°
42°
2
58°
40°
3
66°
35°
4
78°
54°
5
68°
49°
6
61°
45°
7
63°
41°
8
72°
45°
9
76°
56°
10
74°
57°
11
75°
50°
12
79°
45°
13
76°
55°
14
69°
43°
15
78°
47°
16
84°
64°
17
86°
68°
18
87°
67°
19
87°
66°
20
72°
60°
21
68°
57°
22
65°
60°
23
73°
61°
24
76°
63°
25
79°
65°
26
77°
66°
27
82°
66°
28
81°
68°
29
80°
64°
30
76°
62°
31
73°
59°
1
77°
61°
2
78°
61°
3
76°
60°
4
77°
62°
5
78°
64°
6
81°
61°
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 73° to 82°, with overnight lows between 59° and 68°. The average high for May is 78° with an average low of 63°. 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.
