S
M
T
W
T
F
S
29
43°
33°
30
47°
28°
1
44°
32°
2
46°
33°
3
47°
32°
4
45°
33°
5
46°
29°
6
47°
22°
7
43°
21°
8
33°
19°
9
33°
26°
10
37°
22°
11
37°
19°
12
34°
17°
13
32°
17°
14
30°
18°
15
32°
19°
16
33°
18°
17
31°
29°
18
41°
28°
19
43°
27°
20
42°
24°
21
38°
25°
22
37°
21°
23
38°
25°
24
40°
29°
25
42°
27°
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 47°, with overnight lows between 17° and 33°. The average high for December is 39° with an average low of 25°. 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.