S
M
T
W
T
F
S
27
66°
39°
28
75°
34°
29
79°
58°
30
77°
51°
1
76°
42°
2
81°
44°
3
81°
44°
4
81°
44°
5
84°
44°
6
81°
45°
7
80°
40°
8
79°
40°
9
72°
47°
10
62°
36°
11
58°
32°
12
59°
32°
13
64°
27°
14
72°
39°
15
70°
37°
16
70°
30°
17
71°
37°
18
66°
35°
19
59°
38°
20
64°
34°
21
66°
34°
22
51°
35°
23
62°
36°
24
59°
29°
25
56°
34°
26
61°
36°
27
62°
45°
28
55°
36°
29
51°
36°
30
51°
35°
31
50°
40°
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 50° to 55°, with overnight lows between 35° and 40°. The average high for October is 52° with an average low of 37°. 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.