S
M
T
W
T
F
S
29
43°
30°
30
44°
34°
1
49°
31°
2
47°
33°
3
44°
34°
4
50°
29°
5
48°
27°
6
45°
30°
7
47°
23°
8
42°
27°
9
40°
33°
10
45°
33°
11
49°
32°
12
48°
31°
13
47°
29°
14
46°
29°
15
47°
31°
16
47°
32°
17
48°
33°
18
48°
33°
19
47°
32°
20
48°
28°
21
45°
29°
22
42°
31°
23
43°
30°
24
48°
28°
25
45°
25°
26
47°
31°
27
46°
31°
28
46°
23°
29
42°
22°
30
Hist. Avg.
41°
28°
31
Hist. Avg.
41°
28°
1
Hist. Avg.
41°
28°
2
Hist. Avg.
41°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Pendleton
Pendleton's December 2026 forecast shows daily high temperatures ranging from 40° to 50°, with overnight lows between 22° and 34°. The average high for December is 46° with an average low of 30°. 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.
