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