S
M
T
W
T
F
S
29
38°
34°
30
47°
36°
1
49°
33°
2
50°
30°
3
48°
27°
4
37°
30°
5
40°
32°
6
44°
31°
7
46°
30°
8
40°
27°
9
38°
28°
10
39°
29°
11
41°
30°
12
41°
29°
13
42°
31°
14
44°
24°
15
43°
28°
16
35°
28°
17
45°
17°
18
44°
15°
19
30°
16°
20
Hist. Avg.
36°
22°
21
Hist. Avg.
36°
22°
22
Hist. Avg.
36°
22°
23
Hist. Avg.
36°
21°
24
Hist. Avg.
35°
21°
25
Hist. Avg.
35°
21°
26
Hist. Avg.
35°
21°
27
Hist. Avg.
35°
20°
28
Hist. Avg.
34°
20°
29
Hist. Avg.
34°
20°
30
Hist. Avg.
34°
20°
31
Hist. Avg.
34°
19°
1
Hist. Avg.
34°
19°
2
Hist. Avg.
33°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Worcester
Worcester's December 2026 forecast shows daily high temperatures ranging from 30° to 50°, with overnight lows between 15° and 36°. The average high for December is 42° with an average low of 28°. 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 Worcester. See also: January | February | March.