S
M
T
W
T
F
S
26
62°
45°
27
74°
41°
28
76°
54°
29
58°
49°
30
53°
38°
1
49°
36°
2
47°
35°
3
61°
30°
4
73°
48°
5
73°
58°
6
60°
45°
7
60°
37°
8
60°
41°
9
70°
51°
10
64°
44°
11
65°
37°
12
69°
39°
13
71°
47°
14
61°
41°
15
70°
35°
16
72°
48°
17
84°
55°
18
89°
60°
19
89°
66°
20
68°
46°
21
72°
53°
22
67°
57°
23
73°
60°
24
78°
63°
25
77°
58°
26
79°
60°
27
78°
58°
28
80°
59°
29
77°
61°
30
79°
59°
31
81°
59°
1
81°
58°
2
80°
54°
3
79°
59°
4
78°
58°
5
78°
59°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rockford
Rockford's May 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 46° and 63°. 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 Rockford. See also: June | July | August.
