S
M
T
W
T
F
S
26
58°
44°
27
58°
41°
28
65°
44°
29
59°
42°
30
60°
46°
1
66°
44°
2
61°
42°
3
63°
47°
4
70°
50°
5
72°
51°
6
70°
51°
7
73°
52°
8
75°
53°
9
74°
52°
10
74°
50°
11
64°
48°
12
65°
51°
13
69°
52°
14
65°
50°
15
68°
51°
16
73°
54°
17
73°
53°
18
71°
44°
19
70°
44°
20
67°
46°
21
68°
45°
22
68°
45°
23
69°
48°
24
69°
53°
25
71°
49°
26
73°
50°
27
75°
48°
28
71°
53°
29
70°
56°
30
84°
50°
31
75°
57°
1
74°
54°
2
76°
52°
3
74°
58°
4
81°
53°
5
82°
52°
6
75°
53°
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 58° to 84°, with overnight lows between 41° and 58°. The average high for May is 70° with an average low of 49°. 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.
