S
M
T
W
T
F
S
31
91°
73°
1
94°
73°
2
92°
71°
3
90°
71°
4
88°
71°
5
85°
71°
6
85°
72°
7
89°
74°
8
92°
73°
9
91°
73°
10
92°
72°
11
92°
73°
12
91°
72°
13
94°
73°
14
91°
70°
15
95°
74°
16
95°
74°
17
93°
73°
18
87°
72°
19
87°
72°
20
88°
74°
21
89°
73°
22
89°
74°
23
90°
71°
24
90°
73°
25
91°
74°
26
90°
74°
27
90°
73°
28
92°
74°
29
92°
75°
30
94°
74°
1
95°
75°
2
96°
75°
3
96°
74°
4
97°
75°
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 85° to 97°, with overnight lows between 70° and 75°. The average high for June is 91° with an average low of 73°. 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.