S
M
T
W
T
F
S
26
79°
56°
27
80°
56°
28
61°
50°
29
60°
45°
30
66°
41°
1
64°
38°
2
63°
41°
3
79°
44°
4
80°
59°
5
71°
44°
6
59°
41°
7
67°
41°
8
68°
53°
9
81°
53°
10
67°
50°
11
77°
46°
12
79°
56°
13
78°
54°
14
77°
48°
15
82°
64°
16
86°
64°
17
85°
67°
18
76°
63°
19
65°
53°
20
64°
51°
21
68°
58°
22
69°
60°
23
77°
58°
24
79°
60°
25
81°
55°
26
86°
62°
27
85°
61°
28
84°
65°
29
81°
63°
30
82°
61°
31
82°
57°
1
82°
57°
2
83°
58°
3
81°
59°
4
82°
59°
5
87°
64°
6
89°
67°
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 81° to 89°, with overnight lows between 57° and 67°. The average high for May is 84° with an average low of 61°. 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.
