S
M
T
W
T
F
S
29
46°
37°
30
50°
38°
1
51°
37°
2
51°
37°
3
52°
36°
4
44°
33°
5
49°
33°
6
49°
35°
7
48°
33°
8
41°
30°
9
40°
26°
10
37°
26°
11
37°
32°
12
38°
31°
13
40°
30°
14
35°
23°
15
38°
25°
16
38°
30°
17
41°
31°
18
38°
32°
19
46°
28°
20
43°
18°
21
37°
19°
22
32°
21°
23
31°
26°
24
35°
25°
25
45°
25°
26
42°
20°
27
35°
17°
28
32°
18°
29
33°
18°
30
35°
30°
31
44°
26°
1
48°
19°
2
38°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Frederick
Frederick's December 2026 forecast shows daily high temperatures ranging from 31° to 52°, with overnight lows between 17° and 38°. The average high for December is 41° with an average low of 27°. 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 Frederick. See also: January | February | March.
