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
46°
36°
3
56°
31°
4
63°
46°
5
64°
44°
6
53°
34°
7
53°
33°
8
52°
37°
9
58°
44°
10
57°
38°
11
53°
37°
12
53°
39°
13
54°
39°
14
57°
42°
15
59°
44°
16
60°
44°
17
60°
42°
18
59°
45°
19
64°
46°
20
57°
41°
21
58°
42°
22
59°
43°
23
60°
44°
24
63°
46°
25
66°
50°
26
67°
50°
27
63°
47°
28
65°
44°
29
62°
45°
30
68°
52°
31
71°
53°
1
71°
52°
2
67°
49°
3
70°
53°
4
73°
55°
5
74°
55°
6
73°
54°
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 52° to 74°, with overnight lows between 33° and 55°. The average high for May is 62° 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.
