S
M
T
W
T
F
S
29
46°
35°
30
51°
32°
1
51°
26°
2
49°
22°
3
38°
23°
4
39°
30°
5
43°
27°
6
42°
23°
7
39°
30°
8
45°
24°
9
46°
23°
10
38°
19°
11
35°
15°
12
32°
14°
13
31°
19°
14
34°
13°
15
33°
13°
16
28°
14°
17
30°
19°
18
40°
15°
19
37°
17°
20
31°
21°
21
35°
23°
22
36°
19°
23
33°
19°
24
32°
24°
25
42°
23°
26
44°
20°
27
31°
16°
28
28°
16°
29
29°
24°
30
Hist. Avg.
33°
14°
31
Hist. Avg.
33°
14°
1
Hist. Avg.
33°
14°
2
Hist. Avg.
33°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Barrington
Barrington's December 2026 forecast shows daily high temperatures ranging from 28° to 51°, with overnight lows between 13° and 35°. The average high for December is 38° with an average low of 21°. 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 Barrington. See also: January | February | March.