S
M
T
W
T
F
S
29
37°
24°
30
35°
22°
1
34°
25°
2
36°
20°
3
39°
17°
4
29°
24°
5
33°
28°
6
37°
28°
7
38°
29°
8
42°
25°
9
43°
24°
10
36°
22°
11
32°
21°
12
31°
18°
13
30°
17°
14
28°
17°
15
28°
12°
16
26°
18°
17
29°
17°
18
31°
22°
19
33°
21°
20
33°
23°
21
35°
20°
22
35°
20°
23
33°
21°
24
33°
21°
25
36°
16°
26
34°
13°
27
30°
14°
28
27°
14°
29
29°
15°
30
28°
8°
31
27°
9°
1
23°
16°
2
25°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Beaverton
Beaverton's December 2026 forecast shows daily high temperatures ranging from 23° to 43°, with overnight lows between 8° and 29°. The average high for December is 32° with an average low of 19°. 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 Beaverton. See also: January | February | March.
