S
M
T
W
T
F
S
29
43°
34°
30
53°
30°
1
53°
28°
2
52°
36°
3
51°
28°
4
52°
27°
5
41°
26°
6
39°
27°
7
39°
27°
8
40°
31°
9
42°
36°
10
48°
35°
11
50°
31°
12
48°
30°
13
40°
30°
14
40°
26°
15
41°
22°
16
37°
21°
17
35°
22°
18
35°
31°
19
43°
31°
20
42°
25°
21
47°
26°
22
36°
34°
23
48°
36°
24
48°
32°
25
47°
31°
26
46°
31°
27
42°
32°
28
45°
33°
29
46°
33°
30
46°
34°
31
48°
33°
1
49°
30°
2
47°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fall River
Fall River's December 2026 forecast shows daily high temperatures ranging from 35° to 53°, with overnight lows between 21° and 36°. The average high for December is 45° with an average low of 30°. 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. See also: January | February | March.
