S
M
T
W
T
F
S
26
76°
42°
27
74°
55°
28
64°
49°
29
61°
39°
30
58°
34°
1
56°
34°
2
60°
34°
3
73°
47°
4
83°
40°
5
56°
46°
6
57°
35°
7
65°
29°
8
69°
44°
9
76°
50°
10
69°
37°
11
68°
41°
12
83°
47°
13
70°
44°
14
74°
38°
15
82°
57°
16
83°
62°
17
85°
66°
18
76°
63°
19
72°
51°
20
67°
47°
21
71°
47°
22
70°
54°
23
79°
55°
24
82°
59°
25
86°
54°
26
86°
55°
27
89°
51°
28
86°
58°
29
87°
51°
30
84°
58°
31
80°
61°
1
84°
54°
2
84°
49°
3
83°
49°
4
87°
56°
5
84°
71°
6
91°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rock Island
Rock Island's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Rock Island. See also: June | July | August.
