S
M
T
W
T
F
S
26
87°
59°
27
82°
60°
28
73°
64°
29
82°
64°
30
74°
59°
1
67°
55°
2
71°
46°
3
73°
42°
4
81°
44°
5
82°
50°
6
78°
66°
7
73°
56°
8
69°
53°
9
78°
59°
10
83°
60°
11
82°
61°
12
76°
59°
13
83°
53°
14
79°
51°
15
83°
47°
16
87°
53°
17
90°
60°
18
91°
64°
19
91°
70°
20
90°
68°
21
87°
69°
22
80°
67°
23
82°
68°
24
80°
69°
25
78°
69°
26
80°
67°
27
82°
70°
28
85°
67°
29
78°
69°
30
78°
65°
31
79°
64°
1
80°
62°
2
83°
62°
3
82°
63°
4
81°
65°
5
85°
66°
6
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gurnee
Gurnee's May 2026 forecast shows daily high temperatures ranging from 78° to 85°, with overnight lows between 62° and 70°. The average high for May is 81° with an average low of 66°. 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 Gurnee. See also: June | July | August.
