S
M
T
W
T
F
S
29
53°
34°
30
53°
34°
1
48°
32°
2
45°
30°
3
44°
32°
4
45°
31°
5
44°
31°
6
45°
38°
7
49°
39°
8
49°
38°
9
52°
33°
10
49°
35°
11
48°
38°
12
47°
37°
13
47°
38°
14
48°
38°
15
48°
37°
16
49°
36°
17
48°
37°
18
47°
37°
19
47°
36°
20
48°
37°
21
48°
35°
22
46°
34°
23
45°
36°
24
46°
37°
25
45°
38°
26
51°
38°
27
50°
37°
28
49°
37°
29
47°
36°
30
48°
38°
31
47°
36°
1
51°
37°
2
51°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Eugene
Eugene's December 2026 forecast shows daily high temperatures ranging from 44° to 53°, with overnight lows between 30° and 39°. The average high for December is 48° with an average low of 36°. 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 Eugene. See also: January | February | March.
