S
M
T
W
T
F
S
29
42°
30°
30
45°
30°
1
47°
29°
2
43°
28°
3
42°
30°
4
45°
30°
5
45°
29°
6
46°
27°
7
38°
27°
8
39°
18°
9
38°
17°
10
31°
17°
11
32°
20°
12
34°
20°
13
36°
21°
14
36°
21°
15
40°
25°
16
40°
27°
17
44°
25°
18
39°
24°
19
35°
23°
20
36°
24°
21
31°
10°
22
28°
15°
23
36°
13°
24
34°
10°
25
30°
5°
26
25°
4°
27
23°
9°
28
26°
7°
29
25°
14°
30
30°
10°
31
43°
8°
1
33°
8°
2
24°
10°
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 23° to 47°, with overnight lows between 4° and 30°. The average high for December is 36° with an average low of 19°. 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.