S
M
T
W
T
F
S
26
89°
58°
27
87°
57°
28
90°
62°
29
86°
59°
30
93°
67°
31
94°
58°
1
87°
60°
2
79°
47°
3
83°
48°
4
88°
45°
5
93°
48°
6
97°
52°
7
100°
54°
8
96°
55°
9
91°
56°
10
93°
62°
11
91°
63°
12
90°
66°
13
89°
62°
14
91°
54°
15
91°
64°
16
93°
61°
17
91°
61°
18
96°
64°
19
93°
57°
20
99°
54°
21
96°
59°
22
96°
69°
23
86°
60°
24
92°
53°
25
94°
56°
26
97°
55°
27
87°
63°
28
86°
52°
29
76°
58°
30
79°
48°
31
88°
45°
1
86°
56°
2
77°
56°
3
68°
48°
4
76°
42°
5
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Heppner
Heppner's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Heppner. See also: September | October | November.
