S
M
T
W
T
F
S
27
67°
46°
28
65°
42°
29
65°
44°
30
66°
47°
1
65°
44°
2
70°
45°
3
63°
41°
4
64°
48°
5
68°
49°
6
63°
42°
7
68°
48°
8
73°
48°
9
73°
47°
10
72°
48°
11
71°
47°
12
62°
39°
13
58°
40°
14
57°
35°
15
58°
40°
16
56°
35°
17
56°
34°
18
57°
35°
19
61°
41°
20
61°
42°
21
66°
43°
22
66°
43°
23
65°
42°
24
55°
43°
25
59°
43°
26
53°
38°
27
56°
34°
28
54°
31°
29
53°
32°
30
55°
34°
31
58°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Heppner
Heppner's October 2026 forecast shows daily high temperatures ranging from 53° to 73°, with overnight lows between 31° and 49°. The average high for October is 62° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Heppner. See also: November | December | January.