S
M
T
W
T
F
S
26
58°
31°
27
70°
36°
28
59°
49°
29
57°
44°
30
52°
37°
1
49°
32°
2
45°
37°
3
52°
45°
4
64°
48°
5
61°
41°
6
53°
36°
7
51°
37°
8
50°
36°
9
52°
40°
10
57°
39°
11
58°
42°
12
56°
41°
13
58°
42°
14
57°
43°
15
58°
45°
16
60°
44°
17
65°
50°
18
66°
49°
19
62°
46°
20
66°
50°
21
66°
50°
22
65°
44°
23
59°
41°
24
58°
42°
25
58°
43°
26
60°
43°
27
60°
44°
28
61°
43°
29
60°
43°
30
62°
46°
31
63°
48°
1
63°
47°
2
64°
46°
3
66°
54°
4
67°
50°
5
66°
51°
6
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Belleville
Belleville's May 2026 forecast shows daily high temperatures ranging from 50° to 72°, with overnight lows between 36° and 55°. The average high for May is 60° with an average low of 45°. 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 Belleville. See also: June | July | August.
