S
M
T
W
T
F
S
29
52°
32°
30
48°
24°
1
38°
18°
2
37°
19°
3
43°
30°
4
43°
30°
5
41°
29°
6
39°
25°
7
36°
22°
8
35°
23°
9
42°
24°
10
45°
28°
11
45°
28°
12
49°
27°
13
47°
28°
14
41°
25°
15
42°
25°
16
42°
22°
17
40°
15°
18
39°
13°
19
37°
8°
20
32°
8°
21
30°
20°
22
39°
15°
23
40°
16°
24
40°
9°
25
36°
23°
26
37°
24°
27
40°
23°
28
40°
22°
29
39°
18°
30
38°
15°
31
36°
6°
1
33°
6°
2
30°
19°
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 30° to 52°, with overnight lows between 6° and 32°. The average high for December is 40° with an average low of 21°. 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.
