S
M
T
W
T
F
S
31
76°
42°
1
81°
41°
2
82°
55°
3
73°
47°
4
74°
46°
5
76°
45°
6
66°
43°
7
67°
42°
8
76°
49°
9
74°
48°
10
82°
50°
11
80°
50°
12
83°
51°
13
90°
56°
14
86°
52°
15
76°
50°
16
72°
54°
17
81°
56°
18
82°
55°
19
80°
52°
20
81°
55°
21
82°
56°
22
84°
57°
23
84°
56°
24
79°
54°
25
79°
56°
26
84°
56°
27
79°
48°
28
73°
49°
29
77°
54°
30
85°
57°
1
85°
57°
2
86°
58°
3
87°
59°
4
88°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Heppner
Heppner's June 2026 forecast shows daily high temperatures ranging from 66° to 90°, with overnight lows between 42° and 60°. The average high for June is 80° with an average low of 53°. 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 Heppner. See also: July | August | September.