S
M
T
W
T
F
S
26
57°
40°
27
66°
46°
28
65°
52°
29
55°
38°
30
54°
35°
1
44°
40°
2
51°
47°
3
59°
50°
4
72°
45°
5
51°
45°
6
49°
40°
7
50°
41°
8
56°
47°
9
59°
46°
10
58°
50°
11
59°
49°
12
60°
50°
13
59°
48°
14
65°
49°
15
59°
46°
16
59°
45°
17
60°
54°
18
68°
53°
19
62°
53°
20
65°
54°
21
68°
54°
22
65°
55°
23
69°
50°
24
62°
48°
25
62°
51°
26
64°
56°
27
68°
54°
28
64°
53°
29
64°
49°
30
66°
48°
31
65°
49°
1
65°
54°
2
74°
54°
3
65°
52°
4
66°
50°
5
66°
50°
6
67°
51°
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 44° to 74°, with overnight lows between 40° and 56°. The average high for May is 62° with an average low of 49°. 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.
