S
M
T
W
T
F
S
28
80°
65°
29
90°
76°
30
89°
70°
1
85°
69°
2
78°
67°
3
80°
65°
4
81°
63°
5
84°
62°
6
85°
66°
7
87°
66°
8
85°
66°
9
83°
63°
10
83°
63°
11
84°
65°
12
86°
66°
13
87°
65°
14
85°
62°
15
84°
62°
16
86°
65°
17
87°
66°
18
86°
65°
19
80°
60°
20
83°
64°
21
78°
62°
22
79°
64°
23
80°
64°
24
79°
63°
25
80°
64°
26
82°
63°
27
83°
64°
28
84°
66°
29
84°
66°
30
83°
65°
31
84°
66°
1
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Rock Falls
Rock Falls's July 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 60° and 66°. 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 Falls. See also: August | September | October.