S
M
T
W
T
F
S
31
77°
65°
1
85°
66°
2
81°
54°
3
82°
60°
4
86°
64°
5
86°
66°
6
86°
71°
7
87°
70°
8
82°
68°
9
84°
65°
10
83°
67°
11
87°
67°
12
88°
64°
13
83°
65°
14
85°
62°
15
84°
64°
16
82°
61°
17
79°
62°
18
79°
66°
19
80°
67°
20
80°
67°
21
82°
66°
22
83°
67°
23
81°
64°
24
84°
66°
25
85°
67°
26
87°
68°
27
86°
67°
28
84°
68°
29
83°
68°
30
84°
67°
1
81°
67°
2
82°
69°
3
87°
69°
4
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Hillsboro
Hillsboro's June 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 54° and 71°. The average high for June is 84° with an average low of 66°. 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 Hillsboro. See also: July | August | September.