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
80°
50°
13
73°
44°
14
76°
56°
15
86°
58°
16
82°
61°
17
84°
65°
18
80°
57°
19
72°
49°
20
73°
52°
21
75°
53°
22
77°
57°
23
76°
58°
24
78°
57°
25
75°
54°
26
80°
61°
27
80°
61°
28
79°
60°
29
79°
60°
30
74°
58°
31
74°
56°
1
73°
57°
2
71°
61°
3
77°
62°
4
77°
61°
5
80°
62°
6
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rock Island Township
Rock Island Township's May 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 44° and 65°. The average high for May is 77° with an average low of 57°. 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 Township. See also: June | July | August.