S
M
T
W
T
F
S
29
85°
69°
30
86°
69°
1
85°
68°
2
85°
69°
3
86°
69°
4
85°
68°
5
84°
69°
6
84°
69°
7
85°
68°
8
85°
69°
9
84°
68°
10
85°
69°
11
85°
69°
12
86°
68°
13
84°
68°
14
84°
67°
15
85°
68°
16
84°
68°
17
83°
67°
18
83°
68°
19
84°
68°
20
84°
67°
21
85°
68°
22
83°
67°
23
83°
68°
24
84°
67°
25
85°
65°
26
86°
66°
27
86°
66°
28
85°
65°
29
87°
66°
30
86°
66°
31
86°
65°
1
85°
66°
2
87°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Arecibo
Arecibo's December 2026 forecast shows daily high temperatures ranging from 83° to 87°, with overnight lows between 65° and 69°. The average high for December is 85° with an average low of 68°. 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 Arecibo. See also: January | February | March.
