S
M
T
W
T
F
S
26
40°
18°
27
44°
22°
28
47°
17°
29
49°
20°
30
55°
21°
1
69°
27°
2
67°
37°
3
76°
33°
4
44°
33°
5
46°
24°
6
53°
23°
7
60°
22°
8
70°
33°
9
60°
25°
10
66°
24°
11
82°
48°
12
74°
40°
13
81°
40°
14
68°
54°
15
68°
39°
16
60°
26°
17
46°
35°
18
44°
34°
19
56°
29°
20
68°
39°
21
59°
44°
22
58°
47°
23
67°
45°
24
85°
46°
25
87°
48°
26
90°
56°
27
93°
58°
28
91°
63°
29
81°
58°
30
72°
60°
31
77°
57°
1
74°
52°
2
71°
50°
3
69°
47°
4
65°
43°
5
71°
48°
6
79°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Arcola
Arcola's May 2026 forecast shows daily high temperatures ranging from 65° to 91°, with overnight lows between 43° and 63°. The average high for May is 75° with an average low of 53°. 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 Arcola. See also: June | July | August.