S
M
T
W
T
F
S
29
44°
34°
30
46°
29°
1
44°
26°
2
42°
30°
3
42°
27°
4
43°
28°
5
39°
33°
6
44°
39°
7
48°
41°
8
55°
38°
9
56°
36°
10
51°
34°
11
47°
33°
12
45°
31°
13
46°
33°
14
41°
31°
15
46°
28°
16
47°
30°
17
40°
26°
18
39°
25°
19
38°
25°
20
39°
35°
21
48°
33°
22
49°
27°
23
44°
32°
24
41°
35°
25
49°
31°
26
48°
23°
27
44°
29°
28
40°
21°
29
44°
22°
30
35°
19°
31
49°
18°
1
39°
24°
2
35°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Westerly
Westerly's December 2026 forecast shows daily high temperatures ranging from 35° to 56°, with overnight lows between 18° and 41°. The average high for December is 44° with an average low of 29°. 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 Westerly. See also: January | February | March.
