S
M
T
W
T
F
S
28
79°
56°
29
79°
57°
30
80°
59°
1
81°
57°
2
79°
55°
3
78°
56°
4
79°
56°
5
77°
55°
6
79°
58°
7
80°
59°
8
80°
62°
9
82°
62°
10
80°
63°
11
83°
64°
12
87°
65°
13
87°
65°
14
84°
64°
15
85°
65°
16
86°
64°
17
87°
66°
18
89°
66°
19
88°
65°
20
89°
67°
21
89°
66°
22
88°
63°
23
84°
65°
24
84°
58°
25
83°
57°
26
78°
58°
27
78°
57°
28
79°
57°
29
80°
63°
30
81°
65°
31
81°
62°
1
80°
62°
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 77° to 89°, with overnight lows between 55° and 67°. The average high for July is 82° with an average low of 61°. 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.
