S
M
T
W
T
F
S
30
52°
37°
1
49°
33°
2
48°
41°
3
46°
37°
4
49°
36°
5
55°
49°
6
54°
48°
7
57°
48°
8
56°
50°
9
57°
46°
10
62°
54°
11
61°
54°
12
56°
49°
13
52°
45°
14
51°
42°
15
58°
49°
16
59°
52°
17
57°
42°
18
56°
42°
19
48°
40°
20
50°
41°
21
46°
39°
22
51°
43°
23
47°
43°
24
50°
37°
25
51°
37°
26
49°
39°
27
45°
35°
28
46°
33°
29
46°
33°
30
50°
30°
31
50°
29°
1
42°
36°
2
50°
41°
3
51°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Oregon City
Oregon City's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Oregon City. See also: January | February | March.