S
M
T
W
T
F
S
29
48°
36°
30
48°
35°
1
49°
41°
2
47°
39°
3
57°
38°
4
53°
40°
5
47°
34°
6
46°
33°
7
43°
31°
8
41°
30°
9
41°
31°
10
43°
34°
11
43°
36°
12
44°
30°
13
51°
42°
14
53°
43°
15
Hist. Avg.
48°
35°
16
Hist. Avg.
48°
34°
17
Hist. Avg.
48°
34°
18
Hist. Avg.
47°
34°
19
Hist. Avg.
47°
34°
20
Hist. Avg.
47°
34°
21
Hist. Avg.
47°
33°
22
Hist. Avg.
46°
33°
23
Hist. Avg.
46°
33°
24
Hist. Avg.
46°
33°
25
Hist. Avg.
46°
32°
26
Hist. Avg.
46°
32°
27
Hist. Avg.
45°
32°
28
Hist. Avg.
45°
32°
29
Hist. Avg.
45°
32°
30
Hist. Avg.
45°
32°
31
Hist. Avg.
45°
31°
1
Hist. Avg.
44°
31°
2
Hist. Avg.
44°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Baltimore
Baltimore's December 2026 forecast shows daily high temperatures ranging from 41° to 57°, with overnight lows between 30° and 43°. The average high for December is 47° with an average low of 36°. 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 Baltimore. See also: January | February | March.