S
M
T
W
T
F
S
28
90°
72°
29
91°
70°
30
93°
70°
1
95°
70°
2
95°
72°
3
93°
66°
4
90°
64°
5
85°
65°
6
87°
70°
7
89°
70°
8
86°
70°
9
88°
70°
10
86°
72°
11
88°
70°
12
81°
70°
13
81°
72°
14
86°
68°
15
83°
69°
16
84°
69°
17
83°
68°
18
78°
68°
19
83°
68°
20
85°
66°
21
85°
61°
22
80°
57°
23
81°
59°
24
78°
59°
25
81°
60°
26
82°
60°
27
82°
64°
28
84°
63°
29
82°
64°
30
82°
66°
31
88°
66°
1
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Rock Island
Rock Island's July 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 57° and 69°. The average high for July is 83° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Rock Island. See also: August | September | October.