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