S
M
T
W
T
F
S
29
44°
20°
30
43°
19°
1
44°
26°
2
47°
28°
3
43°
25°
4
43°
22°
5
44°
19°
6
44°
20°
7
47°
22°
8
49°
27°
9
50°
24°
10
48°
24°
11
49°
27°
12
50°
27°
13
50°
26°
14
48°
27°
15
50°
19°
16
46°
20°
17
47°
22°
18
50°
22°
19
53°
20°
20
50°
21°
21
48°
22°
22
50°
24°
23
49°
23°
24
50°
29°
25
46°
21°
26
49°
16°
27
43°
18°
28
40°
24°
29
41°
19°
30
44°
24°
31
49°
28°
1
51°
22°
2
46°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fall River Mills
Fall River Mills's December 2026 forecast shows daily high temperatures ranging from 40° to 53°, with overnight lows between 16° and 29°. The average high for December is 47° with an average low of 23°. 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 Fall River Mills. See also: January | February | March.