S
M
T
W
T
F
S
31
73°
39°
1
79°
43°
2
89°
51°
3
88°
46°
4
88°
47°
5
91°
51°
6
83°
42°
7
75°
49°
8
81°
48°
9
81°
48°
10
86°
47°
11
84°
49°
12
95°
55°
13
96°
55°
14
97°
56°
15
94°
58°
16
82°
52°
17
84°
52°
18
84°
51°
19
83°
52°
20
83°
52°
21
85°
53°
22
85°
53°
23
84°
52°
24
85°
53°
25
86°
54°
26
86°
53°
27
85°
51°
28
83°
52°
29
86°
54°
30
87°
55°
1
88°
55°
2
88°
54°
3
87°
56°
4
88°
56°
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 75° to 97°, with overnight lows between 42° and 58°. The average high for June is 86° with an average low of 52°. 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.
