S
M
T
W
T
F
S
31
70°
54°
1
74°
55°
2
77°
57°
3
79°
59°
4
80°
58°
5
83°
59°
6
74°
61°
7
79°
60°
8
82°
52°
9
77°
59°
10
78°
60°
11
83°
60°
12
83°
62°
13
82°
63°
14
85°
62°
15
84°
62°
16
83°
58°
17
83°
62°
18
82°
60°
19
84°
62°
20
84°
60°
21
83°
59°
22
79°
60°
23
81°
56°
24
80°
61°
25
84°
63°
26
86°
64°
27
85°
62°
28
86°
64°
29
88°
66°
30
87°
61°
1
85°
65°
2
81°
57°
3
81°
57°
4
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Janesville
Janesville's June 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 52° and 66°. The average high for June is 81° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Janesville. See also: July | August | September.
