S
M
T
W
T
F
S
26
56°
38°
27
61°
48°
28
56°
45°
29
55°
43°
30
53°
42°
1
51°
40°
2
50°
38°
3
49°
38°
4
54°
41°
5
59°
42°
6
57°
42°
7
59°
41°
8
56°
38°
9
58°
40°
10
58°
39°
11
59°
40°
12
59°
45°
13
60°
46°
14
60°
48°
15
61°
45°
16
60°
45°
17
60°
44°
18
61°
42°
19
62°
43°
20
61°
42°
21
62°
43°
22
63°
49°
23
64°
52°
24
68°
53°
25
65°
48°
26
64°
47°
27
65°
47°
28
68°
54°
29
67°
55°
30
66°
55°
31
67°
54°
1
67°
55°
2
68°
55°
3
71°
54°
4
75°
55°
5
72°
47°
6
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lyons
Lyons's May 2026 forecast shows daily high temperatures ranging from 49° to 75°, with overnight lows between 38° and 55°. The average high for May is 61° with an average low of 46°. 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 Lyons. See also: June | July | August.
