S
M
T
W
T
F
S
29
35°
16°
30
34°
15°
1
35°
23°
2
35°
27°
3
38°
25°
4
37°
18°
5
34°
16°
6
35°
16°
7
35°
18°
8
32°
18°
9
33°
16°
10
32°
17°
11
35°
16°
12
35°
17°
13
36°
21°
14
38°
24°
15
41°
20°
16
41°
23°
17
36°
21°
18
40°
24°
19
42°
26°
20
42°
20°
21
39°
23°
22
41°
24°
23
41°
21°
24
40°
26°
25
38°
19°
26
41°
13°
27
34°
13°
28
29°
22°
29
34°
16°
30
35°
24°
31
35°
25°
1
39°
24°
2
40°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Baker City
Baker City's December 2026 forecast shows daily high temperatures ranging from 29° to 42°, with overnight lows between 13° and 27°. The average high for December is 37° with an average low of 20°. 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 Baker City. See also: January | February | March.