S
M
T
W
T
F
S
29
60°
40°
30
58°
35°
1
53°
45°
2
57°
36°
3
63°
32°
4
64°
32°
5
51°
34°
6
52°
33°
7
53°
35°
8
52°
34°
9
53°
32°
10
51°
30°
11
50°
31°
12
48°
32°
13
50°
32°
14
51°
33°
15
53°
35°
16
53°
38°
17
54°
37°
18
51°
37°
19
51°
36°
20
52°
34°
21
52°
34°
22
53°
38°
23
50°
35°
24
54°
33°
25
49°
32°
26
50°
33°
27
50°
33°
28
49°
32°
29
50°
37°
30
55°
27°
31
47°
28°
1
46°
27°
2
Hist. Avg.
53°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Pendleton
Pendleton's December 2026 forecast shows daily high temperatures ranging from 46° to 64°, with overnight lows between 27° and 45°. The average high for December is 53° with an average low of 34°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Pendleton. See also: January | February | March.
