S
M
T
W
T
F
S
29
38°
23°
30
34°
18°
1
27°
17°
2
30°
22°
3
39°
22°
4
38°
21°
5
33°
21°
6
32°
18°
7
23°
16°
8
29°
19°
9
36°
20°
10
37°
19°
11
36°
19°
12
36°
18°
13
35°
19°
14
24°
16°
15
30°
16°
16
31°
13°
17
30°
8°
18
29°
5°
19
21°
-1°
20
18°
2°
21
17°
13°
22
30°
11°
23
30°
6°
24
27°
11°
25
25°
12°
26
28°
13°
27
30°
11°
28
30°
6°
29
27°
6°
30
22°
1°
31
21°
-6°
1
19°
-1°
2
15°
9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Barry
Barry's December 2026 forecast shows daily high temperatures ranging from 15° to 39°, with overnight lows between -6° and 23°. The average high for December is 29° with an average low of 13°. 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 Barry. See also: January | February | March.