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