S
M
T
W
T
F
S
29
37°
19°
30
37°
19°
1
36°
26°
2
40°
29°
3
42°
25°
4
41°
22°
5
41°
21°
6
40°
23°
7
38°
24°
8
38°
26°
9
40°
24°
10
38°
19°
11
39°
18°
12
38°
19°
13
41°
23°
14
39°
26°
15
47°
24°
16
43°
30°
17
39°
27°
18
41°
26°
19
46°
28°
20
40°
25°
21
40°
27°
22
39°
28°
23
40°
24°
24
39°
23°
25
37°
17°
26
38°
17°
27
31°
16°
28
30°
19°
29
32°
16°
30
32°
21°
31
33°
27°
1
37°
24°
2
39°
21°
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 47°, with overnight lows between 16° and 30°. The average high for December is 39° with an average low of 23°. 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.
