S
M
T
W
T
F
S
31
64°
33°
1
64°
38°
2
75°
38°
3
83°
45°
4
86°
49°
5
86°
52°
6
81°
63°
7
78°
50°
8
77°
49°
9
87°
55°
10
87°
63°
11
86°
63°
12
87°
64°
13
87°
63°
14
84°
64°
15
78°
62°
16
80°
61°
17
78°
59°
18
79°
58°
19
80°
56°
20
80°
59°
21
77°
58°
22
77°
60°
23
74°
56°
24
73°
55°
25
74°
57°
26
75°
54°
27
75°
62°
28
81°
61°
29
76°
57°
30
75°
58°
1
76°
60°
2
79°
58°
3
76°
56°
4
77°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Hillsborough
Hillsborough's June 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 49° and 64°. The average high for June is 79° with an average low of 59°. 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 Hillsborough. See also: July | August | September.