S
M
T
W
T
F
S
28
81°
63°
29
91°
73°
30
91°
79°
1
91°
75°
2
91°
70°
3
82°
66°
4
81°
64°
5
81°
64°
6
85°
55°
7
87°
60°
8
85°
69°
9
81°
65°
10
81°
62°
11
87°
62°
12
87°
64°
13
87°
65°
14
86°
64°
15
87°
63°
16
89°
65°
17
87°
66°
18
89°
65°
19
87°
73°
20
80°
59°
21
78°
59°
22
79°
63°
23
79°
65°
24
80°
64°
25
79°
65°
26
82°
65°
27
79°
64°
28
86°
66°
29
86°
66°
30
85°
65°
31
86°
66°
1
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Janesville
Janesville's July 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 55° and 73°. The average high for July is 84° 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 Janesville. See also: August | September | October.
