S
M
T
W
T
F
S
31
76°
46°
1
78°
57°
2
73°
49°
3
81°
47°
4
87°
50°
5
91°
61°
6
91°
65°
7
90°
65°
8
81°
53°
9
83°
66°
10
87°
72°
11
93°
73°
12
96°
73°
13
90°
70°
14
87°
71°
15
84°
68°
16
84°
68°
17
87°
67°
18
84°
68°
19
85°
69°
20
84°
66°
21
86°
68°
22
86°
69°
23
85°
70°
24
89°
69°
25
88°
70°
26
90°
71°
27
90°
71°
28
90°
70°
29
87°
70°
30
86°
69°
1
86°
71°
2
90°
71°
3
89°
70°
4
89°
72°
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 81° to 96°, with overnight lows between 53° and 73°. The average high for June is 87° with an average low of 69°. 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.