S
M
T
W
T
F
S
29
45°
31°
30
47°
32°
1
48°
29°
2
46°
28°
3
44°
30°
4
41°
29°
5
43°
28°
6
42°
28°
7
42°
27°
8
40°
30°
9
41°
28°
10
43°
27°
11
42°
30°
12
43°
27°
13
42°
28°
14
40°
27°
15
38°
27°
16
37°
26°
17
37°
24°
18
36°
19°
19
34°
16°
20
32°
16°
21
31°
20°
22
32°
18°
23
33°
18°
24
32°
17°
25
31°
15°
26
31°
15°
27
30°
16°
28
32°
19°
29
33°
20°
30
34°
22°
31
35°
21°
1
34°
19°
2
34°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Yakima
Yakima's December 2026 forecast shows daily high temperatures ranging from 30° to 48°, with overnight lows between 15° and 32°. The average high for December is 38° with an average low of 24°. 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 Yakima. See also: January | February | March.
