S
M
T
W
T
F
S
26
73°
56°
27
79°
55°
28
77°
61°
29
69°
55°
30
63°
46°
1
62°
47°
2
56°
42°
3
63°
51°
4
78°
60°
5
66°
51°
6
58°
45°
7
58°
43°
8
66°
51°
9
65°
49°
10
70°
54°
11
65°
52°
12
70°
53°
13
72°
57°
14
73°
56°
15
70°
55°
16
71°
58°
17
79°
63°
18
75°
63°
19
76°
62°
20
77°
60°
21
76°
55°
22
72°
54°
23
70°
54°
24
72°
56°
25
70°
57°
26
72°
55°
27
72°
56°
28
74°
57°
29
75°
58°
30
76°
62°
31
79°
66°
1
76°
62°
2
77°
59°
3
77°
62°
4
78°
62°
5
79°
66°
6
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Edwardsville
Edwardsville's May 2026 forecast shows daily high temperatures ranging from 58° to 84°, with overnight lows between 43° and 67°. The average high for May is 72° with an average low of 57°. 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 Edwardsville. See also: June | July | August.