S
M
T
W
T
F
S
26
54°
33°
27
57°
43°
28
55°
44°
29
64°
46°
30
69°
43°
1
56°
42°
2
56°
40°
3
57°
38°
4
60°
46°
5
58°
46°
6
59°
47°
7
69°
41°
8
58°
39°
9
59°
40°
10
60°
46°
11
62°
48°
12
68°
50°
13
65°
50°
14
71°
52°
15
73°
51°
16
71°
49°
17
65°
45°
18
63°
43°
19
65°
51°
20
68°
47°
21
64°
48°
22
75°
47°
23
71°
53°
24
71°
54°
25
69°
53°
26
75°
55°
27
76°
54°
28
77°
55°
29
78°
56°
30
80°
58°
31
81°
60°
1
82°
57°
2
81°
57°
3
78°
61°
4
80°
62°
5
80°
61°
6
79°
56°
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 54° to 82°, with overnight lows between 33° and 62°. The average high for May is 68° 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 Rockford. See also: June | July | August.
