S
M
T
W
T
F
S
26
73°
52°
27
65°
55°
28
65°
55°
29
63°
47°
30
61°
38°
1
54°
42°
2
54°
38°
3
63°
36°
4
73°
54°
5
64°
45°
6
58°
44°
7
63°
36°
8
65°
48°
9
74°
53°
10
69°
53°
11
71°
43°
12
79°
43°
13
66°
48°
14
69°
40°
15
73°
46°
16
73°
63°
17
84°
64°
18
82°
65°
19
84°
64°
20
71°
59°
21
69°
56°
22
67°
58°
23
73°
60°
24
74°
58°
25
81°
62°
26
79°
66°
27
78°
61°
28
81°
57°
29
79°
55°
30
72°
53°
31
77°
54°
1
78°
60°
2
78°
59°
3
80°
58°
4
78°
56°
5
77°
60°
6
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Carpentersville
Carpentersville's May 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 53° and 66°. The average high for May is 77° with an average low of 58°. 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 Carpentersville. See also: June | July | August.